{
  "name": "Fastener standard equivalences: DIN to ISO / EN crossover",
  "description": "Which ISO or EN standard replaced or corresponds to a given DIN fastener standard, whether the two are dimensionally interchangeable or differ, and what changed. Covers hex bolts, socket screws, set screws, nuts, washers, pins, rivets, machine screws, studs, and other mechanical fastener types. Answers 'is DIN 933 the same as ISO 4017', 'what replaced DIN 912', and 'can I substitute one for the other' \u2014 questions where the practical answer depends on specific dimensional changes (width across flats, head height, thread range) that the sources document.",
  "url": "https://referencesource.org/fastener-thread-standard-equivalence/",
  "licence": "Factual compilation with source citations. The DIN-to-ISO equivalence is a fact about which standard number maps to which; short attributed quotes link back to the published chart or page. No standard text is reproduced.",
  "last_verified": "2026-08-12",
  "stale_after": "2028-08-11",
  "sources": [
    "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
    "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
    "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
    "https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php",
    "https://www.dinmedia.de/en/standard/din-933/3071389"
  ],
  "records": [
    {
      "din_standard": "125",
      "fastener_description": "Normal vs chamfered faces.",
      "iso_standard": "7089, 7090",
      "interchangeability": "Fully interchangeable",
      "id": "125",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/125/",
      "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
      "source_quote": "DIN 125 | ISO 7089, 7090 | Fully interchangeable",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Normal vs chamfered faces.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 125 | ISO 7089, 7090 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Washers; medium type, primarily for hexagon bolts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 125 | ISO 7089 | | Washers; medium type, primarily for hexagon bolts | DIN 125 | ISO 7090 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Washers; medium type, primarily for hexagon bolts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 125 | ISO 7089 | | Washers; medium type, primarily for hexagon bolts |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7089, 7090",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 125 | ISO 7089, 7090 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "7090",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 125 | ISO 7089 | | Washers; medium type, primarily for hexagon bolts | DIN 125 | ISO 7090 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7089",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 125 | ISO 7089 | | Washers; medium type, primarily for hexagon bolts |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "125-1",
      "fastener_description": "Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts",
      "iso_standard": "7089",
      "interchangeability": "Without chamfer, up to nominal diameter 64",
      "modification_notes": "Without chamfer, up to nominal diameter 64",
      "id": "125-1",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/125-1/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts | 125-1 | 7089 | | | 7089 | 2000-11 | Plain washers &#8211; Normal series, Product grade A | Without chamfer, up to nominal diameter 64 |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7089",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts | 125-1 | 7089 | | | 7089 | 2000-11 | Plain washers &#8211; Normal series, Product grade A | Without chamfer, up to nominal diameter 64 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7090",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts | 125-1 | 7089 | | | 7089 | 2000-11 | Plain washers &#8211; Normal series, Product grade A | Without chamfer, up to nominal diameter 64 | Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts | 125-1 | 7090 |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "125-2",
      "fastener_description": "Product grade A washers with a hardness from 300 HV, designed for use with hexagon head bolts and nuts",
      "iso_standard": "7089",
      "interchangeability": "Without chamfer, up to nominal diameter 64",
      "modification_notes": "Without chamfer, up to nominal diameter 64",
      "id": "125-2",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/125-2/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Product grade A washers with a hardness from 300 HV, designed for use with hexagon head bolts and nuts | 125-2 | 7089 | | | 7089 | 2000-11 | Plain washers &#8211; Normal series, Product grade A | Without chamfer, up to nominal diameter 64 |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7089",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Product grade A washers with a hardness from 300 HV, designed for use with hexagon head bolts and nuts | 125-2 | 7089 | | | 7089 | 2000-11 | Plain washers &#8211; Normal series, Product grade A | Without chamfer, up to nominal diameter 64 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7090",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Product grade A washers with a hardness from 300 HV, designed for use with hexagon head bolts and nuts | 125-2 | 7089 | | | 7089 | 2000-11 | Plain washers &#8211; Normal series, Product grade A | Without chamfer, up to nominal diameter 64 | Product grade A washers with a hardness from 300 HV, designed for use with hexagon head bolts and nuts | 125-2 | 7090 |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "126",
      "fastener_description": "Product grade C washers, designed for use with hexagon head bolts and nuts",
      "iso_standard": "7091",
      "interchangeability": "Nominal sizes changed",
      "modification_notes": "Nominal sizes changed",
      "id": "126",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/126/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Product grade C washers, designed for use with hexagon head bolts and nuts | 126 | 7091 | | | 7091 | 2000-11 | Plain washers &#8211; Normal series, Product grade C | Nominal sizes changed |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Product grade C washers, designed for use with hexagon head bolts and nuts",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Product grade C washers, designed for use with hexagon head bolts and nuts | 126 | 7091 | | | 7091 | 2000-11 | Plain washers &#8211; Normal series, Product grade C | Nominal sizes changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Product grade C washers - designed for use with Hexagon Head Bolts and Nut",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 126 | ISO 7091 | | Product grade C washers - designed for use with Hexagon Head Bolts and Nut |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "127",
      "fastener_description": "Spring Lock Washers with square ends or tang ends",
      "id": "127",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/127/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 127 | | BS4464B | Spring Lock Washers with square ends or tang ends |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "128",
      "fastener_description": "Curved and wave Spring Lock Washers",
      "id": "128",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/128/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 128 | | | Curved and wave Spring Lock Washers |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "137",
      "fastener_description": "Spring Washers, curved or wave",
      "id": "137",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/137/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 137 | | | Spring Washers, curved or wave |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "1433",
      "fastener_description": "Clevis pins without head",
      "iso_standard": "2340",
      "en_iso_standard": "22340",
      "interchangeability": "Some other nominal lengths defined",
      "modification_notes": "Some other nominal lengths defined",
      "id": "1433",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1433/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Clevis pins without head | 1433 | | 22340 | | 2340 | 1992-10 | Clevis pins without head | Some other nominal lengths defined |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ]
    },
    {
      "din_standard": "1434",
      "fastener_description": "Clevis pins with head",
      "iso_standard": "2341",
      "en_iso_standard": "22341",
      "interchangeability": "Only one head dimension. Some other nominal lengths defined",
      "modification_notes": "Only one head dimension. Some other nominal lengths defined",
      "id": "1434",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1434/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Clevis pins with head | 1434 | | 22341 | | 2341 | 1992-10 | Clevis pins with head | Only one head dimension. Some other nominal lengths defined |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ]
    },
    {
      "din_standard": "1435",
      "fastener_description": "Clevis pins with head",
      "iso_standard": "2341",
      "en_iso_standard": "22341",
      "interchangeability": "Only one head dimension. Some other nominal lengths defined",
      "modification_notes": "Only one head dimension. Some other nominal lengths defined",
      "id": "1435",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1435/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Clevis pins with head | 1435 | | 22341 | | 2341 | 1992-10 | Clevis pins with head | Only one head dimension. Some other nominal lengths defined |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ]
    },
    {
      "din_standard": "1436",
      "fastener_description": "Clevis pins with head",
      "iso_standard": "2341",
      "en_iso_standard": "22341",
      "interchangeability": "Only one head dimension. Some other nominal lengths defined",
      "modification_notes": "Only one head dimension. Some other nominal lengths defined",
      "id": "1436",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1436/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Clevis pins with head | 1436 | | 22341 | | 2341 | 1992-10 | Clevis pins with head | Only one head dimension. Some other nominal lengths defined |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ]
    },
    {
      "din_standard": "1440",
      "fastener_description": "Plain washers for clevis pins; product grade A",
      "iso_standard": "8738",
      "en_iso_standard": "28738",
      "interchangeability": "Nominal sizes changed",
      "modification_notes": "Nominal sizes changed",
      "id": "1440",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1440/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "1440 | | 28738 | | 8738 | 1992-10 | Plain washers for clevis pins; product grade A | Nominal sizes changed |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Plain washers for clevis pins; product grade A",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "1440 | | 28738 | | 8738 | 1992-10 | Plain washers for clevis pins; product grade A | Nominal sizes changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Medium type washers for pins",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1440 | ISO 8738 | | Medium type washers for pins |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1443",
      "fastener_description": "Clevis pins without head",
      "iso_standard": "2340",
      "en_iso_standard": "22340",
      "id": "1443",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1443/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Clevis pins without head | 1443 | | 22340 | | 2340 |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Clevis pins without head",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Clevis pins without head | 1443 | | 22340 | | 2340 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Clevis Pins without head",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1443 | ISO 2340 | | Clevis Pins without head |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1444",
      "fastener_description": "Clevis pins with head",
      "iso_standard": "2341",
      "en_iso_standard": "22341",
      "interchangeability": "Some other nominal lengths defined",
      "modification_notes": "Some other nominal lengths defined",
      "id": "1444",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1444/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Clevis pins with head | 1444 | | 22341 | | 2341 | 1992-10 | Clevis pins with head | Some other nominal lengths defined |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Clevis pins with head",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Clevis pins with head | 1444 | | 22341 | | 2341 | 1992-10 | Clevis pins with head | Some other nominal lengths defined |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Clevis Pins with head",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1444 | ISO 2341 | | Clevis Pins with head |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1470",
      "fastener_description": "Grooved pins \u2013 Fulllength parallel grooved, with pilot",
      "iso_standard": "8739",
      "interchangeability": "Nominal lengths redefined. Shear rate increased.",
      "modification_notes": "Nominal lengths redefined. Shear rate increased.",
      "id": "1470",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1470/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "1470 | 8739 | 28739 | | 8739 | 1998-03 | Grooved pins &#8211; Full-length parallel grooved, with pilot | Nominal lengths redefined. Shear rate increased. |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Grooved pins \u2013 Fulllength parallel grooved, with pilot",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "1470 | 8739 | 28739 | | 8739 | 1998-03 | Grooved pins &#8211; Full-length parallel grooved, with pilot | Nominal lengths redefined. Shear rate increased. |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Grooved Pins, full length parallel-grooved with pilot",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1470 | ISO 8739 | | Grooved Pins, full length parallel-grooved with pilot |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1471",
      "fastener_description": "Grooved pins \u2013 Fulllength taper grooved",
      "iso_standard": "8744",
      "interchangeability": "Nominal lengths redefined. Shear rate increased.",
      "modification_notes": "Nominal lengths redefined. Shear rate increased.",
      "id": "1471",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1471/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "1471 | 8744 | 28744 | | 8744 | 1998-03 | Grooved pins &#8211; Full-length taper grooved | Nominal lengths redefined. Shear rate increased. |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Grooved pins \u2013 Fulllength taper grooved",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "1471 | 8744 | 28744 | | 8744 | 1998-03 | Grooved pins &#8211; Full-length taper grooved | Nominal lengths redefined. Shear rate increased. |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Grooved Pins, full length taper-grooved",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1471 | ISO 8744 | | Grooved Pins, full length taper-grooved |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1472",
      "fastener_description": "Grooved pins \u2013 Half-length taper grooved",
      "iso_standard": "8745",
      "interchangeability": "Nominal lengths redefined. Shear rate increased.",
      "modification_notes": "Nominal lengths redefined. Shear rate increased.",
      "id": "1472",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1472/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "1472 | 8745 | 28745 | | 8745 | 1998-03 | Grooved pins &#8211; Half-length taper grooved | Nominal lengths redefined. Shear rate increased. |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Grooved pins \u2013 Half-length taper grooved",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "1472 | 8745 | 28745 | | 8745 | 1998-03 | Grooved pins &#8211; Half-length taper grooved | Nominal lengths redefined. Shear rate increased. |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Grooved Pins, half length taper-grooved",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1472 | ISO 8745 | | Grooved Pins, half length taper-grooved |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1473",
      "fastener_description": "Grooved pins \u2013 Full-length parallel grooved, with chamfer",
      "iso_standard": "8740",
      "interchangeability": "Nominal lengths redefined. Shear rate increased.",
      "modification_notes": "Nominal lengths redefined. Shear rate increased.",
      "id": "1473",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1473/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "1473 | 8740 | 28740 | | 8740 | 1998-03 | Grooved pins &#8211; Full-length parallel grooved, with chamfer | Nominal lengths redefined. Shear rate increased. |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Grooved pins \u2013 Full-length parallel grooved, with chamfer",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "1473 | 8740 | 28740 | | 8740 | 1998-03 | Grooved pins &#8211; Full-length parallel grooved, with chamfer | Nominal lengths redefined. Shear rate increased. |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Grooved Pins, full length parallel-grooved with chamfer",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1473 | ISO 8740 | | Grooved Pins, full length parallel-grooved with chamfer |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1474",
      "fastener_description": "Grooved pins \u2013 Half-length reverse-taper grooved",
      "iso_standard": "8741",
      "interchangeability": "Nominal lengths redefined. Shear rate increased.",
      "modification_notes": "Nominal lengths redefined. Shear rate increased.",
      "id": "1474",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1474/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "1474 | 8741 | 28741 | | 8741 | 1998-03 | Grooved pins &#8211; Half-length reverse-taper grooved | Nominal lengths redefined. Shear rate increased. |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Grooved pins \u2013 Half-length reverse-taper grooved",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "1474 | 8741 | 28741 | | 8741 | 1998-03 | Grooved pins &#8211; Half-length reverse-taper grooved | Nominal lengths redefined. Shear rate increased. |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Grooved Pins, half length reverse-grooved",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1474 | ISO 8741 | | Grooved Pins, half length reverse-grooved |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1475",
      "fastener_description": "Grooved pins \u2013 One-third-length centre grooved",
      "iso_standard": "8742",
      "interchangeability": "Nominal lengths redefined. Shear rate increased.",
      "modification_notes": "Nominal lengths redefined. Shear rate increased.",
      "id": "1475",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1475/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "1475 | 8742 | 28742 | | 8742 | 1998-03 | Grooved pins &#8211; One-third-length centre grooved | Nominal lengths redefined. Shear rate increased. |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Grooved pins \u2013 One-third-length centre grooved",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "1475 | 8742 | 28742 | | 8742 | 1998-03 | Grooved pins &#8211; One-third-length centre grooved | Nominal lengths redefined. Shear rate increased. |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Grooved Pins, third length centre-grooved",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1475 | ISO 8742 | | Grooved Pins, third length centre-grooved |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1476",
      "fastener_description": "Grooved pins with round head",
      "iso_standard": "8746",
      "interchangeability": "Chamfer redefined",
      "modification_notes": "Chamfer redefined",
      "id": "1476",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1476/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Chamfer redefined | Grooved pins with round head | 1476 | 8746 |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Grooved pins with round head",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Chamfer redefined | Grooved pins with round head | 1476 | 8746 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Round Head Grooved Pins",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1476 | ISO 8746 | | Round Head Grooved Pins |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1477",
      "fastener_description": "Grooved pins with countersunk head",
      "iso_standard": "8747",
      "interchangeability": "Chamfer redefined",
      "modification_notes": "Chamfer redefined",
      "id": "1477",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1477/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Grooved pins with countersunk head | 1477 | 8747 | 28747 | | 8747 | 1998-03 | Grooved pins with countersunk head | Chamfer redefined |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Grooved pins with countersunk head",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Grooved pins with countersunk head | 1477 | 8747 | 28747 | | 8747 | 1998-03 | Grooved pins with countersunk head | Chamfer redefined |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Countersunk Head Grooved Pins",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1477 | ISO 8747 | | Countersunk Head Grooved Pins |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1481",
      "fastener_description": "Spring-type straight pins \u2013 Slotted, heavy duty",
      "iso_standard": "8752",
      "interchangeability": "Specification \u201cnon-jamming\u201d included; chamfer redefined; partial change of dimensions",
      "modification_notes": "Specification \u201cnon-jamming\u201d included; chamfer redefined; partial change of dimensions",
      "id": "1481",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1481/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "1481 | 8752 |",
      "verified_fields": [
        "din_standard",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Spring-type straight pins \u2013 Slotted, heavy duty",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "1481 | 8752 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Spring-type Straight Pins (roll pins) - heavy type",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 1481 | ISO 8752 | | Spring-type Straight Pins (roll pins) - heavy type |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "1587",
      "fastener_description": "Hexagon Domed Cap Nuts",
      "id": "1587",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1587/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 1587 | | | Hexagon Domed Cap Nuts |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "1816",
      "fastener_description": "Round Nut with set pin holes inside; ISO metric fine thread",
      "id": "1816",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/1816/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 1816 | | | Round Nut with set pin holes inside; ISO metric fine thread |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "315",
      "fastener_description": "Wing Nuts with rounded wings",
      "id": "315",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/315/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 315 | | | Wing Nuts with rounded wings |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "316",
      "fastener_description": "Wing Screws with rounded wings",
      "id": "316",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/316/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 316 | | | Wing Screws with rounded wings |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "404",
      "fastener_description": "Slotted Capstan Screws",
      "id": "404",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/404/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 404 | | | Slotted Capstan Screws |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "417",
      "fastener_description": "Slotted set screws with long dog point",
      "iso_standard": "7435",
      "en_iso_standard": "27435",
      "interchangeability": "No modifications of dimensions",
      "modification_notes": "No modifications of dimensions",
      "id": "417",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/417/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "No modifications of dimensions | Slotted set screws with long dog point | 417 | | 27435 | | 7435 | 1992-10 | Slotted set screws with long dog point |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Slotted set screws with long dog point",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "No modifications of dimensions | Slotted set screws with long dog point | 417 | | 27435 | | 7435 | 1992-10 | Slotted set screws with long dog point |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Legacy to EN conversion.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 417 | DIN EN 27435 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Slotted Set Screws with long dog point",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 417 | ISO 7435 | | Slotted Set Screws with long dog point |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7435",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "No modifications of dimensions | Slotted set screws with long dog point | 417 | | 27435 | | 7435 | 1992-10 | Slotted set screws with long dog point |",
              "as_of": "2026-08-12"
            },
            {
              "value": "27435",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 417 | DIN EN 27435 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "7435",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 417 | ISO 7435 | | Slotted Set Screws with long dog point |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "No modifications of dimensions",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "No modifications of dimensions | Slotted set screws with long dog point | 417 | | 27435 | | 7435 | 1992-10 | Slotted set screws with long dog point |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 417 | DIN EN 27435 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "427",
      "fastener_description": "Slotted headless screws with shank",
      "iso_standard": "2342",
      "id": "427",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/427/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "427 | 2342 | | | 2342 | 2004-05 | Slotted headless screws with shank |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ],
      "also_reported": [
        {
          "field": "interchangeability",
          "value": "Fully interchangeable",
          "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
          "source_quote": "DIN 427 | ISO 2342 | Fully interchangeable",
          "as_of": "2026-08-12"
        }
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Slotted headless screws with shank",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "427 | 2342 | | | 2342 | 2004-05 | Slotted headless screws with shank |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Slotted variant.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 427 | ISO 2342 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Slotted Headless Screws with chamfered end",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 427 | ISO 2342 | | Slotted Headless Screws with chamfered end |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "428",
      "fastener_description": "Hexagon Nuts, Grade C",
      "iso_standard": "4034",
      "id": "428",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/428/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 428 | ISO 4034 | | Hexagon Nuts, Grade C |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "433",
      "fastener_description": "Small series.",
      "iso_standard": "7092",
      "interchangeability": "Fully interchangeable",
      "id": "433",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/433/",
      "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
      "source_quote": "DIN 433 | ISO 7092 | Fully interchangeable",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Small series.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 433 | ISO 7092 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Washers for use with cheese head screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 433 | ISO 7092 | | Washers for use with cheese head screws |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "433-1",
      "fastener_description": "Product grade A washers with a hardness up to 250 HV, designed for use with cheese head screws",
      "iso_standard": "7092",
      "interchangeability": "Pyramid diamond hardness 140 HV cancelled; rating changed",
      "modification_notes": "Pyramid diamond hardness 140 HV cancelled; rating changed",
      "id": "433-1",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/433-1/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Product grade A washers with a hardness up to 250 HV, designed for use with cheese head screws | 433-1 | 7092 | | | 7092 | 2000-11 | Plain washers &#8211; Small series, Product grade A | Pyramid diamond hardness 140 HV cancelled; rating changed |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Product grade A washers with a hardness up to 250 HV, designed for use with cheese head screws",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Product grade A washers with a hardness up to 250 HV, designed for use with cheese head screws | 433-1 | 7092 | | | 7092 | 2000-11 | Plain washers &#8211; Small series, Product grade A | Pyramid diamond hardness 140 HV cancelled; rating changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 433-1 | ISO 7092 | | Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "433-2",
      "fastener_description": "Product grade A washers with a hardness up to 300 HV, designed for use with cheese head screws",
      "iso_standard": "7092",
      "interchangeability": "Nominal sizes changed",
      "modification_notes": "Nominal sizes changed",
      "id": "433-2",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/433-2/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Product grade A washers with a hardness up to 300 HV, designed for use with cheese head screws | 433-2 | 7092 | | | 7092 | 2000-11 | Plain washers &#8211; Small series, Product grade A | Nominal sizes changed |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Product grade A washers with a hardness up to 300 HV, designed for use with cheese head screws",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Product grade A washers with a hardness up to 300 HV, designed for use with cheese head screws | 433-2 | 7092 | | | 7092 | 2000-11 | Plain washers &#8211; Small series, Product grade A | Nominal sizes changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Product grade A washers - with a hardness up to 300 HV designed for use with cheese head screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 433-2 | ISO 7092 | | Product grade A washers - with a hardness up to 300 HV designed for use with cheese head screws |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "438",
      "fastener_description": "Legacy to EN conversion.",
      "iso_standard": "27436",
      "interchangeability": "Check spec",
      "id": "438",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/438/",
      "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
      "source_quote": "DIN 438 | DIN EN 27436 | Check spec",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Legacy to EN conversion.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 438 | DIN EN 27436 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Slotted Set Screws with cup point",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 438 | ISO 7436 | | Slotted Set Screws with cup point |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "27436",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 438 | DIN EN 27436 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "7436",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 438 | ISO 7436 | | Slotted Set Screws with cup point |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "439",
      "fastener_description": "Chamfered/unchamfered covered by ISO pair.",
      "iso_standard": "4035, 4036",
      "interchangeability": "Fully interchangeable",
      "id": "439",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/439/",
      "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
      "source_quote": "DIN 439 | ISO 4035, 4036 | Fully interchangeable",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Chamfered/unchamfered covered by ISO pair.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 439 | ISO 4035, 4036 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fine thread thin nut.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 439 | ISO 8675 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Thin Nuts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439 | ISO 4035 | BS3692 | Hexagon Thin Nuts | DIN 439 | ISO 4036 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Edge prep varies; check bearing face.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 439 | ISO 4036 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Thin Nuts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439 | ISO 4035 | BS3692 | Hexagon Thin Nuts | DIN 439 | ISO 4036 | BS3692 | Hexagon Thin Nuts | DIN 439 | ISO 8675 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Thin Nuts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439 | ISO 4035 | BS3692 | Hexagon Thin Nuts |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "4035, 4036",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 439 | ISO 4035, 4036 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "8675",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 439 | ISO 8675 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "4036",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439 | ISO 4035 | BS3692 | Hexagon Thin Nuts | DIN 439 | ISO 4036 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "4036",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 439 | ISO 4036 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "8675",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439 | ISO 4035 | BS3692 | Hexagon Thin Nuts | DIN 439 | ISO 4036 | BS3692 | Hexagon Thin Nuts | DIN 439 | ISO 8675 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "4035",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439 | ISO 4035 | BS3692 | Hexagon Thin Nuts |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 439 | ISO 4035, 4036 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 439 | ISO 8675 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 439 | ISO 4036 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "439-1",
      "fastener_description": "Hexagon thin nuts with M 1,6 to M 10 threads",
      "iso_standard": "4036",
      "interchangeability": "Correlation of dimensions with DIN 439-1, except for the width across flat of the nut M10",
      "modification_notes": "Correlation of dimensions with DIN 439-1, except for the width across flat of the nut M10",
      "id": "439-1",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/439-1/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Hexagon thin nuts with M 1,6 to M 10 threads | 439-1 | 4036 | 24036 | 4036 | 4036 | 2001-02 | Hexagon thin nuts (unchamfered) &#8211; Product grade B | Correlation of dimensions with DIN 439-1, except for the width across flat of the nut M10 |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon thin nuts with M 1,6 to M 10 threads",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon thin nuts with M 1,6 to M 10 threads | 439-1 | 4036 | 24036 | 4036 | 4036 | 2001-02 | Hexagon thin nuts (unchamfered) &#8211; Product grade B | Correlation of dimensions with DIN 439-1, except for the width across flat of the nut M10 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Unchamfered Hexagon Thin Nuts - product grade B",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439-1 | ISO 4036 | | Unchamfered Hexagon Thin Nuts - product grade B |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "439-2",
      "fastener_description": "Hexagon thin nuts with M 1,6 to M 52 and M 8\u00d71 to M 52\u00d73 threads",
      "iso_standard": "4035",
      "interchangeability": "In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed",
      "modification_notes": "In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed",
      "id": "439-2",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/439-2/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "439-2 | 4035 | 24035 | | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) &#8211; Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed |",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon thin nuts with M 1,6 to M 52 and M 8\u00d71 to M 52\u00d73 threads",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 4035 | 24035 | | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) &#8211; Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon thin nuts with M 1,6 to M 52 and M 8\u00d71 to M 52\u00d73 threads",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 4035 | 24035 | 4035 | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) &#8211; Product grades A and B | Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; fine thread see ISO 8675 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Chamfered Hexagon Thin Nuts - product grades A and B",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon thin nuts with M 1,6 to M 52 and M 8\u00d71 to M 52\u00d73 threads",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 8675 | 28675 | | 8675 | 2001-03 | Hexagon thin nuts (unchamfered) with metric fine pitch thread &#8211; Product grades A and B | Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; regular type screw thread see ISO 4035 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Chamfered Hexagon Thin Nuts - product grades A and B",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B | DIN 439-2 | ISO 8675 |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "4035",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 4035 | 24035 | | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) &#8211; Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "4035",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 4035 | 24035 | 4035 | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) &#8211; Product grades A and B | Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; fine thread see ISO 8675 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "4035",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B |",
              "as_of": "2026-08-12"
            },
            {
              "value": "8675",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 8675 | 28675 | | 8675 | 2001-03 | Hexagon thin nuts (unchamfered) with metric fine pitch thread &#8211; Product grades A and B | Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; regular type screw thread see ISO 4035 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "8675",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B | DIN 439-2 | ISO 8675 |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 4035 | 24035 | | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) &#8211; Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; fine thread see ISO 8675",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 4035 | 24035 | 4035 | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) &#8211; Product grades A and B | Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; fine thread see ISO 8675 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; regular type screw thread see ISO 4035",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 8675 | 28675 | | 8675 | 2001-03 | Hexagon thin nuts (unchamfered) with metric fine pitch thread &#8211; Product grades A and B | Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; regular type screw thread see ISO 4035 |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "modification_notes",
          "versions": [
            {
              "value": "In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 4035 | 24035 | | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) &#8211; Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; fine thread see ISO 8675",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 4035 | 24035 | 4035 | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) &#8211; Product grades A and B | Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; fine thread see ISO 8675 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; regular type screw thread see ISO 4035",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "439-2 | 8675 | 28675 | | 8675 | 2001-03 | Hexagon thin nuts (unchamfered) with metric fine pitch thread &#8211; Product grades A and B | Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; regular type screw thread see ISO 4035 |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "440",
      "fastener_description": "Plain washers \u2013 Extra large series, product grade C",
      "iso_standard": "7094",
      "interchangeability": "Nominal sizes changed, nominal size 24 size \u201ca\u201d redefined to the maximum, square-end hole Form R omitted; (standard DIN 440 still valid)",
      "modification_notes": "Nominal sizes changed, nominal size 24 size \u201ca\u201d redefined to the maximum, square-end hole Form R omitted; (standard DIN 440 still valid)",
      "id": "440",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/440/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "440 | 7094 |",
      "verified_fields": [
        "din_standard",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Plain washers \u2013 Extra large series, product grade C",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "440 | 7094 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Washers for use in timber constructions",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 440 | ISO 7094 | | Washers for use in timber constructions |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "444",
      "fastener_description": "Eyebolts",
      "id": "444",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/444/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 444 | | | Eyebolts |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "462",
      "fastener_description": "Machine tools; internal tab washers for slotted round nuts for hook spanner according to DIN 1804",
      "id": "462",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/462/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 462 | | | Machine tools; internal tab washers for slotted round nuts for hook spanner according to DIN 1804 |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "464",
      "fastener_description": "Knurled Thumb Screws, high type",
      "id": "464",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/464/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 464 | | | Knurled Thumb Screws, high type |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "466",
      "fastener_description": "Knurled Nuts, high type",
      "id": "466",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/466/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 466 | | | Knurled Nuts, high type |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "467",
      "fastener_description": "Knurled Nuts, low type",
      "id": "467",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/467/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 467 | | | Knurled Nuts, low type |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "471",
      "fastener_description": "Circlips (retaining rings) for shafts; normal type and heavy type",
      "id": "471",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/471/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 471 | | | Circlips (retaining rings) for shafts; normal type and heavy type |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "479",
      "fastener_description": "Square Head Bolts with short dog point",
      "id": "479",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/479/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 479 | | | Square Head Bolts with short dog point |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "5406",
      "fastener_description": "Lock Washers and locking plates for use with rolling bearings",
      "id": "5406",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/5406/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 5406 | | | Lock Washers and locking plates for use with rolling bearings |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "548",
      "fastener_description": "Round Nuts with set pin holes inside",
      "id": "548",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/548/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 548 | | | Round Nuts with set pin holes inside |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "551",
      "fastener_description": "Slotted set screws with flat point",
      "iso_standard": "4766",
      "en_iso_standard": "24766",
      "interchangeability": "No modifications of dimensions",
      "modification_notes": "No modifications of dimensions",
      "id": "551",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/551/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "No modifications of dimensions | Slotted set screws with flat point | 551 | | 24766 | | 4766 | 1992-10 | Slotted set screws with flat point |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Slotted set screws with flat point",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "No modifications of dimensions | Slotted set screws with flat point | 551 | | 24766 | | 4766 | 1992-10 | Slotted set screws with flat point |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Slot width/tolerance differences.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 551 | ISO 4766 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Slotted Set Screws with flat point",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 551 | ISO 4766 | | Slotted Set Screws with flat point |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "No modifications of dimensions",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "No modifications of dimensions | Slotted set screws with flat point | 551 | | 24766 | | 4766 | 1992-10 | Slotted set screws with flat point |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 551 | ISO 4766 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "553",
      "fastener_description": "Slotted set screws with cone point",
      "iso_standard": "7434",
      "en_iso_standard": "27434",
      "interchangeability": "No modifications of dimensions",
      "modification_notes": "No modifications of dimensions",
      "id": "553",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/553/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "553 | | 27434 | | 7434 | 1992-10 | Slotted set screws with cone point | No modifications of dimensions |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Slotted set screws with cone point",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "553 | | 27434 | | 7434 | 1992-10 | Slotted set screws with cone point | No modifications of dimensions |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Point geometry.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 553 | ISO 7434 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Slotted Set Screws with cone point",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 553 | ISO 7434 | | Slotted Set Screws with cone point |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "No modifications of dimensions",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "553 | | 27434 | | 7434 | 1992-10 | Slotted set screws with cone point | No modifications of dimensions |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 553 | ISO 7434 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "555",
      "fastener_description": "Hexagon nuts; Metric Thread, Type g",
      "iso_standard": "4034",
      "interchangeability": "Width across flats according to DIN ISO 272 included; nominal diameter reduced",
      "modification_notes": "Width across flats according to DIN ISO 272 included; nominal diameter reduced",
      "id": "555",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/555/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Hexagon nuts; Metric Thread, Type g | 555 | 4034 | 24034 | 4034 | 4034 | 2001-03 | Hexagon nuts &#8211; Product grade C | Width across flats according to DIN ISO 272 included; nominal diameter reduced |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon nuts; Metric Thread, Type g",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts; Metric Thread, Type g | 555 | 4034 | 24034 | 4034 | 4034 | 2001-03 | Hexagon nuts &#8211; Product grade C | Width across flats according to DIN ISO 272 included; nominal diameter reduced |",
              "as_of": "2026-08-12"
            },
            {
              "value": "M5 to M100x6 Hexagon Nuts - product grade C",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 555 | ISO 4034 | | M5 to M100x6 Hexagon Nuts - product grade C |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "558",
      "fastener_description": "Hexagon screws, Thread Approximately to Head, Metric Thread, Type g",
      "iso_standard": "4018",
      "interchangeability": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "modification_notes": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "id": "558",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/558/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Hexagon screws, Thread Approximately to Head, Metric Thread, Type g | 558 | 4018 | 24018 | 4018 | 4018 | 2001-03 | Hexagon head screws &#8211; Product grade C | Nominal size extended; width across flats according to DIN ISO 272 included |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon screws, Thread Approximately to Head, Metric Thread, Type g",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon screws, Thread Approximately to Head, Metric Thread, Type g | 558 | 4018 | 24018 | 4018 | 4018 | 2001-03 | Hexagon head screws &#8211; Product grade C | Nominal size extended; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Alt coarse hex FT.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 558 | ISO 4018 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Head Screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 558 | ISO 4018 | | Hexagon Head Screws |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size extended; width across flats according to DIN ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon screws, Thread Approximately to Head, Metric Thread, Type g | 558 | 4018 | 24018 | 4018 | 4018 | 2001-03 | Hexagon head screws &#8211; Product grade C | Nominal size extended; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 558 | ISO 4018 | Fully interchangeable",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "580",
      "fastener_description": "Collar Eyebolts for lifting purposes",
      "id": "580",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/580/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 580 | | | Collar Eyebolts for lifting purposes |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "601",
      "fastener_description": "Hexagon Bolts without Hexagon Nut \u2013 with Hexagon Nut, Type g",
      "iso_standard": "4016",
      "interchangeability": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "modification_notes": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "id": "601",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/601/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "601 | 4016 | 24016 | 4016 | 4016 | 2001-03 | Hexagon head bolts &#8211; Product grade C | Nominal size extended; width across flats according to DIN ISO 272 included |",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon Bolts without Hexagon Nut \u2013 with Hexagon Nut, Type g",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "601 | 4016 | 24016 | 4016 | 4016 | 2001-03 | Hexagon head bolts &#8211; Product grade C | Nominal size extended; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Alt coarse hex PT.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 601 | ISO 4016 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "M5 to M52 Hexagon Head Bolts; product grade C",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 601 | ISO 4016 | | M5 to M52 Hexagon Head Bolts; product grade C |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size extended; width across flats according to DIN ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "601 | 4016 | 24016 | 4016 | 4016 | 2001-03 | Hexagon head bolts &#8211; Product grade C | Nominal size extended; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 601 | ISO 4016 | Fully interchangeable",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "603",
      "fastener_description": "Mushroom head square neck bolts",
      "iso_standard": "8677",
      "id": "603",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/603/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Mushroom head square neck bolts | 603 | | | | 8677 |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Mushroom head square neck bolts",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Mushroom head square neck bolts | 603 | | | | 8677 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Mushroom Head Square Neck Bolts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 603 | | | Mushroom Head Square Neck Bolts |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "609",
      "fastener_description": "Hexagon Fits Bolts with long thread",
      "id": "609",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/609/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 609 | | | Hexagon Fits Bolts with long thread |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "6319",
      "fastener_description": "Spherical Washers and conical seats",
      "id": "6319",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6319/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6319 | | | Spherical Washers and conical seats |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "6325",
      "fastener_description": "Parallel pins, Hardened; Tolerance Zone m6",
      "iso_standard": "8734",
      "interchangeability": "Some other nominal lengths defined",
      "modification_notes": "Some other nominal lengths defined",
      "id": "6325",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6325/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Parallel pins, Hardened; Tolerance Zone m6 | 6325 | 8734 | 28734 | | 8734 | 1998-03 | Parallel pins of hardened and martensitic stainless steel (Dowel pins) | Some other nominal lengths defined |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Parallel pins, Hardened; Tolerance Zone m6",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Parallel pins, Hardened; Tolerance Zone m6 | 6325 | 8734 | 28734 | | 8734 | 1998-03 | Parallel pins of hardened and martensitic stainless steel (Dowel pins) | Some other nominal lengths defined |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Parallel Pins, hardened: tolerance zone m6",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6325 | ISO 8734 | | Parallel Pins, hardened: tolerance zone m6 |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "6340",
      "fastener_description": "Washers for clamping devices",
      "id": "6340",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6340/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6340 | | | Washers for clamping devices |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "653",
      "fastener_description": "Knurled Thumb Screws, low type",
      "id": "653",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/653/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 653 | | | Knurled Thumb Screws, low type |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "6797",
      "fastener_description": "Toothed Lock Washers",
      "id": "6797",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6797/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6797 | | | Toothed Lock Washers |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "6798",
      "fastener_description": "Serrated Lock Washers",
      "id": "6798",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6798/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6798 | | | Serrated Lock Washers |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "6799",
      "fastener_description": "Lock Washers (retaining washers) for shafts",
      "id": "6799",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6799/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6799 | | | Lock Washers (retaining washers) for shafts |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "6900",
      "fastener_description": "Screw and Washer assemblies",
      "iso_standard": "10644",
      "id": "6900",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6900/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6900 | ISO 10644 | | Screw and Washer assemblies |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "6901",
      "fastener_description": "Tapping Screw and Washer assemblies",
      "iso_standard": "10510",
      "id": "6901",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6901/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6901 | ISO 10510 | | Tapping Screw and Washer assemblies |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "6902",
      "fastener_description": "Plain Washers for screw and washer assemblies",
      "iso_standard": "10673",
      "id": "6902",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6902/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6902 | ISO 10673 | | Plain Washers for screw and washer assemblies |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "6903",
      "fastener_description": "Plain Washers for tapping screw and washer assemblies",
      "iso_standard": "10669",
      "id": "6903",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6903/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6903 | ISO 10669 | | Plain Washers for tapping screw and washer assemblies |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "6912",
      "fastener_description": "Hexagon Socket Thin Head Cap Screws with pilot recess",
      "id": "6912",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6912/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6912 | | | Hexagon Socket Thin Head Cap Screws with pilot recess |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "6914",
      "fastener_description": "High-strength hexagon head bolts with large widths across flats for structural steel bolting",
      "iso_standard": "7412",
      "en_iso_standard": "14399-4",
      "id": "6914",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6914/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "High-strength hexagon head bolts with large widths across flats for structural steel bolting | 6914 | | 14399-4 | | 7412 |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "High-strength hexagon head bolts with large widths across flats for structural steel bolting",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "High-strength hexagon head bolts with large widths across flats for structural steel bolting | 6914 | | 14399-4 | | 7412 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "High-strength Hexagon Head Bolts with large widths across flats for structural steel bolting",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6914 | ISO 14399-4 | | High-strength Hexagon Head Bolts with large widths across flats for structural steel bolting |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7412",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "High-strength hexagon head bolts with large widths across flats for structural steel bolting | 6914 | | 14399-4 | | 7412 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "14399-4",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6914 | ISO 14399-4 | | High-strength Hexagon Head Bolts with large widths across flats for structural steel bolting |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "6915",
      "fastener_description": "High-strength hexagon nuts with large widths across flats for structural steel bolting",
      "en_iso_standard": "14399-4",
      "id": "6915",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6915/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "High-strength hexagon nuts with large widths across flats for structural steel bolting | 6915 | | 14399-4 |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "6916",
      "fastener_description": "Washers for high tensile bolting in steel structures",
      "iso_standard": "7416",
      "en_iso_standard": "14399-6",
      "id": "6916",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6916/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Washers for high tensile bolting in steel structures | 6916 | | 14399-6 | | 7416 |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Washers for high tensile bolting in steel structures",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Washers for high tensile bolting in steel structures | 6916 | | 14399-6 | | 7416 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Round Washers for high-strength structural steel bolting",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6916 | | | Round Washers for high-strength structural steel bolting |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "6921",
      "fastener_description": "Hexagon flange bolts",
      "iso_standard": "8102",
      "en_iso_standard": "1665",
      "interchangeability": "Dimensions partially changed; width across flats according to ISO 272; strength 12.9 omitted",
      "modification_notes": "Dimensions partially changed; width across flats according to ISO 272; strength 12.9 omitted",
      "id": "6921",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6921/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Hexagon flange bolts | 6921 | | 1665 | | 8102 | 1998-11 | Hexagon bolts with flange, heavy series | Dimensions partially changed; width across flats according to ISO 272; strength 12.9 omitted |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon flange bolts",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon flange bolts | 6921 | | 1665 | | 8102 | 1998-11 | Hexagon bolts with flange, heavy series | Dimensions partially changed; width across flats according to ISO 272; strength 12.9 omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Flange OD/serrations/tolerance windows.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6921 | DIN EN 1665 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Flange Bolts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6921 | ISO 1665 | | Hexagon Flange Bolts |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "8102",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon flange bolts | 6921 | | 1665 | | 8102 | 1998-11 | Hexagon bolts with flange, heavy series | Dimensions partially changed; width across flats according to ISO 272; strength 12.9 omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "1665",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6921 | DIN EN 1665 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "1665",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6921 | ISO 1665 | | Hexagon Flange Bolts |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Dimensions partially changed; width across flats according to ISO 272; strength 12.9 omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon flange bolts | 6921 | | 1665 | | 8102 | 1998-11 | Hexagon bolts with flange, heavy series | Dimensions partially changed; width across flats according to ISO 272; strength 12.9 omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6921 | DIN EN 1665 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "6922",
      "fastener_description": "Hexagon Flange Bolts with reduced shank",
      "iso_standard": "1665",
      "id": "6922",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6922/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 6922 | ISO 1665 | | Hexagon Flange Bolts with reduced shank |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "6923",
      "fastener_description": "Hexagon nuts with flange",
      "iso_standard": "4161",
      "en_iso_standard": "1661",
      "interchangeability": "Fine thread omitted to be included in a separate standard later); width across flat M10 changed",
      "modification_notes": "Fine thread omitted to be included in a separate standard later); width across flat M10 changed",
      "id": "6923",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6923/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Hexagon nuts with flange | 6923 | | 1661 | | 4161 | 1998-02 | Hexagon nuts with flange | Fine thread omitted to be included in a separate standard later); width across flat M10 changed |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon nuts with flange",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts with flange | 6923 | | 1661 | | 4161 | 1998-02 | Hexagon nuts with flange | Fine thread omitted to be included in a separate standard later); width across flat M10 changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Flange geometry/tolerance.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6923 | DIN EN 1661 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Nuts with flange",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6923 | ISO 1661 | | Hexagon Nuts with flange |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "4161",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts with flange | 6923 | | 1661 | | 4161 | 1998-02 | Hexagon nuts with flange | Fine thread omitted to be included in a separate standard later); width across flat M10 changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "1661",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6923 | DIN EN 1661 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "1661",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6923 | ISO 1661 | | Hexagon Nuts with flange |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Fine thread omitted to be included in a separate standard later); width across flat M10 changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts with flange | 6923 | | 1661 | | 4161 | 1998-02 | Hexagon nuts with flange | Fine thread omitted to be included in a separate standard later); width across flat M10 changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6923 | DIN EN 1661 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "6924",
      "fastener_description": "Prevailing torque type hexagon nuts with non-metallic insert",
      "iso_standard": "7040",
      "interchangeability": "Height of nut changed; width across flat according to ISO 272 included",
      "modification_notes": "Height of nut changed; width across flat according to ISO 272 included",
      "id": "6924",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6924/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type hexagon nuts with non-metallic insert | 6924 | 7040 |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Prevailing torque type hexagon nuts with non-metallic insert",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type hexagon nuts with non-metallic insert | 6924 | 7040 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type hexagon nuts with non-metallic insert",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type hexagon nuts with non-metallic insert | 6924 | 7040 | 27040 | | 7040 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1 &#8211; Property classes 5, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type hexagon nuts with non-metallic insert | 6924 | 10512 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type Hexagon Nuts with non-metallic insert",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6924 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert | DIN 6924 | ISO 10512 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type Hexagon Nuts with non-metallic insert",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6924 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7040",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type hexagon nuts with non-metallic insert | 6924 | 7040 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "10512",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type hexagon nuts with non-metallic insert | 6924 | 7040 | 27040 | | 7040 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1 &#8211; Property classes 5, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type hexagon nuts with non-metallic insert | 6924 | 10512 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "10512",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6924 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert | DIN 6924 | ISO 10512 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7040",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6924 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "6925",
      "fastener_description": "Prevailing torque type all-metal hexagon nuts",
      "iso_standard": "7042",
      "interchangeability": "Height of nut changed; width across flat according to ISO 272 included",
      "modification_notes": "Height of nut changed; width across flat according to ISO 272 included",
      "id": "6925",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6925/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Prevailing torque type all-metal hexagon nuts | 6925 | 7042 | 27042 | | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 &#8211; Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Prevailing torque type all-metal hexagon nuts",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Prevailing torque type all-metal hexagon nuts | 6925 | 7042 | 27042 | | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 &#8211; Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type all-metal hexagon nuts",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Prevailing torque type all-metal hexagon nuts | 6925 | 7042 | 27042 | | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 &#8211; Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type all-metal hexagon nuts | 6925 | 10513 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type all-metal Hexagon Nuts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6925 | ISO 7042 | | Prevailing torque type all-metal Hexagon Nuts | DIN 6925 | ISO 10513 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type all-metal Hexagon Nuts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6925 | ISO 7042 | | Prevailing torque type all-metal Hexagon Nuts |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7042",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Prevailing torque type all-metal hexagon nuts | 6925 | 7042 | 27042 | | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 &#8211; Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "10513",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Prevailing torque type all-metal hexagon nuts | 6925 | 7042 | 27042 | | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 &#8211; Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type all-metal hexagon nuts | 6925 | 10513 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "10513",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6925 | ISO 7042 | | Prevailing torque type all-metal Hexagon Nuts | DIN 6925 | ISO 10513 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7042",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6925 | ISO 7042 | | Prevailing torque type all-metal Hexagon Nuts |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "6926",
      "fastener_description": "Prevailing torque type hexagon nuts with flange (with non-metallic insert), with metric fine pitch thread",
      "iso_standard": "12125",
      "en_iso_standard": "1666",
      "interchangeability": "Width across flat M10 changed",
      "modification_notes": "Width across flat M10 changed",
      "id": "6926",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6926/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "6926 | | 1666 | | 12125 | 1998-02 | Prevailing torque type hexagon nuts with flange (with non-metallic insert), with metric fine pitch thread | Width across flat M10 changed |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Prevailing torque type hexagon nuts with flange (with non-metallic insert), with metric fine pitch thread",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "6926 | | 1666 | | 12125 | 1998-02 | Prevailing torque type hexagon nuts with flange (with non-metallic insert), with metric fine pitch thread | Width across flat M10 changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Deformation style/serrations differ.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6926 | DIN EN 1663, 1666 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type Hexagon Nuts with flange and with non-metallic insert",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6926 | ISO 7043 | | Prevailing torque type Hexagon Nuts with flange and with non-metallic insert | DIN 6926 | ISO 12125 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type Hexagon Nuts with flange and with non-metallic insert",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6926 | ISO 7043 | | Prevailing torque type Hexagon Nuts with flange and with non-metallic insert |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "12125",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "6926 | | 1666 | | 12125 | 1998-02 | Prevailing torque type hexagon nuts with flange (with non-metallic insert), with metric fine pitch thread | Width across flat M10 changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "1663, 1666",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6926 | DIN EN 1663, 1666 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "12125",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6926 | ISO 7043 | | Prevailing torque type Hexagon Nuts with flange and with non-metallic insert | DIN 6926 | ISO 12125 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7043",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6926 | ISO 7043 | | Prevailing torque type Hexagon Nuts with flange and with non-metallic insert |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Width across flat M10 changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "6926 | | 1666 | | 12125 | 1998-02 | Prevailing torque type hexagon nuts with flange (with non-metallic insert), with metric fine pitch thread | Width across flat M10 changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6926 | DIN EN 1663, 1666 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "6927",
      "fastener_description": "Prevailing torque type \u2013 All-metal hexagon nuts with flange",
      "iso_standard": "7044",
      "en_iso_standard": "1664",
      "interchangeability": "Width across flat M10 changed",
      "modification_notes": "Width across flat M10 changed",
      "id": "6927",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/6927/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "6927 | | 1664 | | 7044 | 1998-02 | Prevailing torque type &#8211; All-metal hexagon nuts with flange | Width across flat M10 changed |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Prevailing torque type \u2013 All-metal hexagon nuts with flange",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "6927 | | 1664 | | 7044 | 1998-02 | Prevailing torque type &#8211; All-metal hexagon nuts with flange | Width across flat M10 changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Variant series.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6927 | DIN EN 1664, 1667 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type All-Metal Nuts with flange",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6927 | ISO 7044 | | Prevailing torque type All-Metal Nuts with flange | DIN 6927 | ISO 12126 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type All-Metal Nuts with flange",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6927 | ISO 7044 | | Prevailing torque type All-Metal Nuts with flange |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7044",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "6927 | | 1664 | | 7044 | 1998-02 | Prevailing torque type &#8211; All-metal hexagon nuts with flange | Width across flat M10 changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "1664, 1667",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6927 | DIN EN 1664, 1667 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "12126",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6927 | ISO 7044 | | Prevailing torque type All-Metal Nuts with flange | DIN 6927 | ISO 12126 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7044",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 6927 | ISO 7044 | | Prevailing torque type All-Metal Nuts with flange |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Width across flat M10 changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "6927 | | 1664 | | 7044 | 1998-02 | Prevailing torque type &#8211; All-metal hexagon nuts with flange | Width across flat M10 changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 6927 | DIN EN 1664, 1667 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7045",
      "fastener_description": "Pan Head Screws with type H or type Z cross recess - product grade A",
      "id": "7045",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7045/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7045 | | | Pan Head Screws with type H or type Z cross recess - product grade A |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "7337",
      "fastener_description": "Break mandrel Blind Rivets",
      "iso_standard": "14589",
      "id": "7337",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7337/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7337 | ISO 14589 | | Break mandrel Blind Rivets |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "14589",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7337 | ISO 14589 | | Break mandrel Blind Rivets |",
              "as_of": "2026-08-12"
            },
            {
              "value": "15977 to ISO 15984",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7337 | ISO 14589 | | Break mandrel Blind Rivets | DIN 7337 | ISO 15977 to ISO 15984 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "16582 to ISO 16584",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7337 | ISO 14589 | | Break mandrel Blind Rivets | DIN 7337 | ISO 15977 to ISO 15984 | | Break mandrel Blind Rivets | DIN 7337 | ISO 16582 to ISO 16584 |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7343",
      "fastener_description": "Spring-type straight pins \u2013 Coiled, standard duty",
      "iso_standard": "8750",
      "interchangeability": "Range of nominal diameters and lengths extended. Shear range changed.",
      "modification_notes": "Range of nominal diameters and lengths extended. Shear range changed.",
      "id": "7343",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7343/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "7343 | 8750 | 28750 | 8750 | 8750 | 2007-06 | Spring-type straight pins &#8211; Coiled, standard duty | Range of nominal diameters and lengths extended. Shear range changed. |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Spring-type straight pins \u2013 Coiled, standard duty",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7343 | 8750 | 28750 | 8750 | 8750 | 2007-06 | Spring-type straight pins &#8211; Coiled, standard duty | Range of nominal diameters and lengths extended. Shear range changed. |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Spiral Pins; normal type",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7343 | ISO 8750 | | Spiral Pins; normal type |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7344",
      "fastener_description": "Spring-type straight pins \u2013 Coiled, heavy duty",
      "iso_standard": "8748",
      "interchangeability": "Range of nominal diameters and lengths extended. Shear range changed.",
      "modification_notes": "Range of nominal diameters and lengths extended. Shear range changed.",
      "id": "7344",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7344/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "7344 | 8748 | 28748 | 8748 | 8748 | 2007-06 | Spring-type straight pins &#8211; Coiled, heavy duty | Range of nominal diameters and lengths extended. Shear range changed. |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Spring-type straight pins \u2013 Coiled, heavy duty",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7344 | 8748 | 28748 | 8748 | 8748 | 2007-06 | Spring-type straight pins &#8211; Coiled, heavy duty | Range of nominal diameters and lengths extended. Shear range changed. |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Spiral Pins; heavy duty type",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7344 | ISO 8748 | | Spiral Pins; heavy duty type |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7346",
      "fastener_description": "Spring-type straight pins, slotted, light duty",
      "iso_standard": "3337",
      "en_iso_standard": "13337",
      "interchangeability": "Specification \u201cnon-jamming\u201d included; chamfer redefined; partial change of dimensions",
      "modification_notes": "Specification \u201cnon-jamming\u201d included; chamfer redefined; partial change of dimensions",
      "id": "7346",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7346/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Spring-type straight pins, slotted, light duty | 7346 | 13337 | | | 3337 |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Spring-type straight pins, slotted, light duty",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Spring-type straight pins, slotted, light duty | 7346 | 13337 | | | 3337 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Spring-type Straight Pins; (roll pins) lightweight type",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7346 | ISO 13337 | | Spring-type Straight Pins; (roll pins) lightweight type |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "3337",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Spring-type straight pins, slotted, light duty | 7346 | 13337 | | | 3337 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "13337",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7346 | ISO 13337 | | Spring-type Straight Pins; (roll pins) lightweight type |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7349",
      "fastener_description": "Plain Washers for Bolts with heavy clamping sleeves",
      "id": "7349",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7349/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7349 | | | Plain Washers for Bolts with heavy clamping sleeves |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "7500-1",
      "fastener_description": "Thread rolling screws for ISO metric thread \u2013 Part 1: Technical specifications for case hardened and tempered screws",
      "iso_standard": "7085",
      "interchangeability": "Normative revision, values for case-hardening depth and hole size revised, torque values reduced",
      "modification_notes": "Normative revision, values for case-hardening depth and hole size revised, torque values reduced",
      "id": "7500-1",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7500-1/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "7500-1 | 7085 | | | | 2009-06 | Thread rolling screws for ISO-metric thread | Normative revision, values for case-hardening depth and hole size revised, torque values reduced |",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Thread rolling screws for ISO metric thread \u2013 Part 1: Technical specifications for case hardened and tempered screws",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7500-1 | 7085 | | | | 2009-06 | Thread rolling screws for ISO-metric thread | Normative revision, values for case-hardening depth and hole size revised, torque values reduced |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Thread rolling Screws for metric ISO thread - Part 1: Types, designation, requirements",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7500-1 | ISO 7085 | | Thread rolling Screws for metric ISO thread - Part 1: Types, designation, requirements |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7500-2",
      "fastener_description": "Thread rolling Screws for ISO metric thread; guideline values for hole diameters",
      "id": "7500-2",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7500-2/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7500-2 | | | Thread rolling Screws for ISO metric thread; guideline values for hole diameters |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "7504",
      "fastener_description": "Cross recessed countersunk head drilling screws with tapping screw thread",
      "iso_standard": "15482",
      "interchangeability": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted",
      "modification_notes": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted",
      "id": "7504",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7504/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "7504 | 15482 | | | 15482 | 2000-02 | Cross recessed countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Cross recessed countersunk head drilling screws with tapping screw thread",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15482 | | | 15482 | 2000-02 | Cross recessed countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Cross recessed pan head drilling screws with tapping screw thread",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15481 | | | 15481 | 2000-02 | Cross recessed pan head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Cross recessed raised countersunk head drilling screws with tapping screw thread",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15483 | | | 15483 | 2000-02 | Cross recessed raised countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Drilling screws with tapping screw thread \u2013 Mechanical and functional properties",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15482 | | | 15482 | 2000-02 | Cross recessed countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon washers head drilling screws with tapping screw thread",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15480 | | | 15480 | 2000-02 | Hexagon washers head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3,9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Self-drilling Screws with tapping screw thread - dimensions, requirements and testing",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7504 | | | Self-drilling Screws with tapping screw thread - dimensions, requirements and testing |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "15482",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15482 | | | 15482 | 2000-02 | Cross recessed countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "15481",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15481 | | | 15481 | 2000-02 | Cross recessed pan head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "15483",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15483 | | | 15483 | 2000-02 | Cross recessed raised countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "10666",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15482 | | | 15482 | 2000-02 | Cross recessed countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "15480",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15480 | | | 15480 | 2000-02 | Hexagon washers head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3,9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15482 | | | 15482 | 2000-02 | Cross recessed countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15481 | | | 15481 | 2000-02 | Cross recessed pan head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15483 | | | 15483 | 2000-02 | Cross recessed raised countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15482 | | | 15482 | 2000-02 | Cross recessed countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3,9 omitted; hexagon head with collar and slot (Form L) omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15480 | | | 15480 | 2000-02 | Hexagon washers head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3,9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "modification_notes",
          "versions": [
            {
              "value": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15482 | | | 15482 | 2000-02 | Cross recessed countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15481 | | | 15481 | 2000-02 | Cross recessed pan head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15483 | | | 15483 | 2000-02 | Cross recessed raised countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15482 | | | 15482 | 2000-02 | Cross recessed countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3,9 omitted; hexagon head with collar and slot (Form L) omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7504 | 15480 | | | 15480 | 2000-02 | Hexagon washers head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3,9 omitted; hexagon head with collar and slot (Form L) omitted |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7513",
      "fastener_description": "Hexagon Head and slotted head thread cutting screws - dimensions, requirements and testing",
      "id": "7513",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7513/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7513 | | | Hexagon Head and slotted head thread cutting screws - dimensions, requirements and testing |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "7516",
      "fastener_description": "Cross recessed head thread cutting screws - dimensions, requirements and testing",
      "id": "7516",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7516/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7516 | | | Cross recessed head thread cutting screws - dimensions, requirements and testing |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "7603",
      "fastener_description": "Ring Seals and Gaskets",
      "id": "7603",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7603/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7603 | | | Ring Seals and Gaskets |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "7970",
      "fastener_description": "Threads and thread ends for tapping screws (modified version of ISO 1478)",
      "iso_standard": "1478",
      "id": "7970",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7970/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7970 | ISO 1478 | | Threads and thread ends for tapping screws (modified version of ISO 1478) |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "7971",
      "fastener_description": "Slotted Pan Head Tapping Screws",
      "iso_standard": "1481",
      "id": "7971",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7971/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7971 | ISO 1481 | BS4174 | Slotted Pan Head Tapping Screws |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "7972",
      "fastener_description": "Slotted Countersunk Head Tapping Screws",
      "iso_standard": "1482",
      "id": "7972",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7972/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7972 | ISO 1482 | | Slotted Countersunk Head Tapping Screws |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "7973",
      "fastener_description": "Slotted Raised Countersunk Head Tapping Screws",
      "iso_standard": "1483",
      "id": "7973",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7973/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7973 | ISO 1483 | | Slotted Raised Countersunk Head Tapping Screws |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "7976",
      "fastener_description": "Slotted set screws with cup point",
      "iso_standard": "1479",
      "interchangeability": "No modifications of dimensions",
      "modification_notes": "No modifications of dimensions",
      "id": "7976",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7976/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Slotted set screws with cup point | 7976 | | | 1479 | 1479 | 1990-08 | Hexagon head tapping screws | No modifications of dimensions |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Slotted set screws with cup point",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Slotted set screws with cup point | 7976 | | | 1479 | 1479 | 1990-08 | Hexagon head tapping screws | No modifications of dimensions |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Point/thread form variations.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7976 | ISO 1479 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "No modifications of dimensions",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Slotted set screws with cup point | 7976 | | | 1479 | 1479 | 1990-08 | Hexagon head tapping screws | No modifications of dimensions |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7976 | ISO 1479 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7977",
      "fastener_description": "Unhardened taper pins with external thread",
      "iso_standard": "8737",
      "en_iso_standard": "28737",
      "interchangeability": "Technical delivery conditions partially changed",
      "modification_notes": "Technical delivery conditions partially changed",
      "id": "7977",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7977/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "7977 | | 28737 | | 8737 | 1992-10 | Unhardened taper pins with external thread | Technical delivery conditions partially changed |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Unhardened taper pins with external thread",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7977 | | 28737 | | 8737 | 1992-10 | Unhardened taper pins with external thread | Technical delivery conditions partially changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Taper Pins with thread ends and constant point lengths",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7977 | ISO 8737 | | Taper Pins with thread ends and constant point lengths |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7978",
      "fastener_description": "Unhardened taper pins with internal thread",
      "iso_standard": "8736",
      "en_iso_standard": "28736",
      "interchangeability": "Dimensions partially changed",
      "modification_notes": "Dimensions partially changed",
      "id": "7978",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7978/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "7978 | | 28736 | | 8736 | 1992-10 | Unhardened taper pins with internal thread | Dimensions partially changed |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Unhardened taper pins with internal thread",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7978 | | 28736 | | 8736 | 1992-10 | Unhardened taper pins with internal thread | Dimensions partially changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Taper Pins with internal thread",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7978 | ISO 8736 | | Taper Pins with internal thread |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7979",
      "fastener_description": "Parallel pins with internal thread",
      "iso_standard": "8735",
      "interchangeability": "Dimensions partially changed",
      "modification_notes": "Dimensions partially changed",
      "id": "7979",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7979/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Parallel pins with internal thread | 7979 | 8735 | 28735 | | 8735 | 1998-03 | Parallel pins with internal thread, of hardened and martensitic stainless steel | Dimensions partially changed |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Parallel pins with internal thread",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Parallel pins with internal thread | 7979 | 8735 | 28735 | | 8735 | 1998-03 | Parallel pins with internal thread, of hardened and martensitic stainless steel | Dimensions partially changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Parallel pins with internal thread, of unhardened and austenitic stainless steel",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7979 | 8735 | 28735 | | 8735 | 1998-03 | Parallel pins with internal thread, of hardened and martensitic stainless steel | Dimensions partially changed | Parallel pins with internal thread, of unhardened and austenitic stainless steel | 7979 | 8733 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Parallel Pins with internal thread",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7979 | ISO 8733 | | Parallel Pins with internal thread | DIN 7979 | ISO 8735 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Parallel Pins with internal thread",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7979 | ISO 8733 | | Parallel Pins with internal thread |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "8735",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Parallel pins with internal thread | 7979 | 8735 | 28735 | | 8735 | 1998-03 | Parallel pins with internal thread, of hardened and martensitic stainless steel | Dimensions partially changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "8733",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7979 | 8735 | 28735 | | 8735 | 1998-03 | Parallel pins with internal thread, of hardened and martensitic stainless steel | Dimensions partially changed | Parallel pins with internal thread, of unhardened and austenitic stainless steel | 7979 | 8733 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "8735",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7979 | ISO 8733 | | Parallel Pins with internal thread | DIN 7979 | ISO 8735 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "8733",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7979 | ISO 8733 | | Parallel Pins with internal thread |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7980",
      "fastener_description": "Spring Lock Washers with square ends for cheese head screws",
      "id": "7980",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7980/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7980 | | BS4464A | Spring Lock Washers with square ends for cheese head screws |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "7981",
      "fastener_description": "Cross recessed pan head tapping screws",
      "iso_standard": "7049",
      "interchangeability": "Marginal change of head dimensions. Caution with automatic feed and connection systems",
      "modification_notes": "Marginal change of head dimensions. Caution with automatic feed and connection systems",
      "id": "7981",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7981/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "7981 | | | 7049 | 7049 | 1990-08 | Cross recessed pan head tapping screws | Marginal change of head dimensions. Caution with automatic feed and connection systems |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Cross recessed pan head tapping screws",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7981 | | | 7049 | 7049 | 1990-08 | Cross recessed pan head tapping screws | Marginal change of head dimensions. Caution with automatic feed and connection systems |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Head/point differences.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7981 | ISO 7049 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Cross Recessed Pan Head Tapping Screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7981 | ISO 7049 | | Cross Recessed Pan Head Tapping Screws |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Marginal change of head dimensions. Caution with automatic feed and connection systems",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7981 | | | 7049 | 7049 | 1990-08 | Cross recessed pan head tapping screws | Marginal change of head dimensions. Caution with automatic feed and connection systems |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7981 | ISO 7049 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7982",
      "fastener_description": "Countersunk (flat) head tapping screws with cross recess",
      "iso_standard": "7050",
      "interchangeability": "Head dimensions and countersunk angles changed",
      "modification_notes": "Head dimensions and countersunk angles changed",
      "id": "7982",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7982/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Countersunk (flat) head tapping screws with cross recess | 7982 | | | 7050 | 7050 | 1990-08 | Cross recessed countersunk (flat) head tapping screws (common head style) | Head dimensions and countersunk angles changed |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Countersunk (flat) head tapping screws with cross recess",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Countersunk (flat) head tapping screws with cross recess | 7982 | | | 7050 | 7050 | 1990-08 | Cross recessed countersunk (flat) head tapping screws (common head style) | Head dimensions and countersunk angles changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Countersink/head angle.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7982 | ISO 7050 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Cross Recessed Countersunk Head Tapping Screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7982 | ISO 7050 | | Cross Recessed Countersunk Head Tapping Screws |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Head dimensions and countersunk angles changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Countersunk (flat) head tapping screws with cross recess | 7982 | | | 7050 | 7050 | 1990-08 | Cross recessed countersunk (flat) head tapping screws (common head style) | Head dimensions and countersunk angles changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7982 | ISO 7050 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7983",
      "fastener_description": "Raised countersunk (oval) head; tapping screws with cross recess",
      "iso_standard": "7051",
      "interchangeability": "Head dimensions and countersunk angles changed",
      "modification_notes": "Head dimensions and countersunk angles changed",
      "id": "7983",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7983/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Raised countersunk (oval) head; tapping screws with cross recess | 7983 | | | 7051 | 7051 | 1990-08 | Cross recessed raised countersunk (oval) head tapping screws | Head dimensions and countersunk angles changed |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Raised countersunk (oval) head; tapping screws with cross recess",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Raised countersunk (oval) head; tapping screws with cross recess | 7983 | | | 7051 | 7051 | 1990-08 | Cross recessed raised countersunk (oval) head tapping screws | Head dimensions and countersunk angles changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Raised profile tolerance.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7983 | ISO 7051 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Countersunk (flat) Head Tapping Screws with cross recess",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7983 | ISO 7051 | | Countersunk (flat) Head Tapping Screws with cross recess |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Head dimensions and countersunk angles changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Raised countersunk (oval) head; tapping screws with cross recess | 7983 | | | 7051 | 7051 | 1990-08 | Cross recessed raised countersunk (oval) head tapping screws | Head dimensions and countersunk angles changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7983 | ISO 7051 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7984",
      "fastener_description": "Hexagon Socket Thin Head Cap Screws",
      "id": "7984",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7984/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7984 | | | Hexagon Socket Thin Head Cap Screws |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "7985",
      "fastener_description": "Recessed raised cheese (fillister) head screws",
      "iso_standard": "7045",
      "interchangeability": "Nominal size changed; head dimension changed; thread length changed; penetration depth of cross slots changed",
      "modification_notes": "Nominal size changed; head dimension changed; thread length changed; penetration depth of cross slots changed",
      "id": "7985",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7985/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Recessed raised cheese (fillister) head screws | 7985 | 7045 | | | 7045 | 1994-10 | Pan head screws with type H or type Z cross recess &#8211; product grade A | Nominal size changed; head dimension changed; thread length changed; penetration depth of cross slots changed |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Recessed raised cheese (fillister) head screws",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Recessed raised cheese (fillister) head screws | 7985 | 7045 | | | 7045 | 1994-10 | Pan head screws with type H or type Z cross recess &#8211; product grade A | Nominal size changed; head dimension changed; thread length changed; penetration depth of cross slots changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "General-purpose pan head.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7985 | ISO 7045 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Cross recessed raised Phillips Pan Head Screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7985 | ISO 7045 | BS4183 | Cross recessed raised Phillips Pan Head Screws |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size changed; head dimension changed; thread length changed; penetration depth of cross slots changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Recessed raised cheese (fillister) head screws | 7985 | 7045 | | | 7045 | 1994-10 | Pan head screws with type H or type Z cross recess &#8211; product grade A | Nominal size changed; head dimension changed; thread length changed; penetration depth of cross slots changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7985 | ISO 7045 | Fully interchangeable",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "7989-1",
      "fastener_description": "Washers for steel structures - product grade C",
      "id": "7989-1",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7989-1/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7989-1 | | | Washers for steel structures - product grade C |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "7989-2",
      "fastener_description": "Washers for steel structures - product grade A",
      "id": "7989-2",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7989-2/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 7989-2 | | | Washers for steel structures - product grade A |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "7991",
      "fastener_description": "Hexagon socket countersunk head screws",
      "iso_standard": "10462",
      "en_iso_standard": "10642",
      "id": "7991",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/7991/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "7991 | 10642 | | | 10462 | 2004-06 | Hexagon socket countersunk head screws |",
      "verified_fields": [
        "din_standard",
        "en_iso_standard",
        "fastener_description",
        "iso_standard"
      ],
      "also_reported": [
        {
          "field": "interchangeability",
          "value": "Check spec",
          "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
          "source_quote": "DIN 7991 | ISO 10642 | Check spec",
          "as_of": "2026-08-12"
        }
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon socket countersunk head screws",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7991 | 10642 | | | 10462 | 2004-06 | Hexagon socket countersunk head screws |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Head angle/height differences exist.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7991 | ISO 10642 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Socket Countersunk Head Cap Screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7991 | ISO 10642 | BS4168 | Hexagon Socket Countersunk Head Cap Screws |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "10462",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "7991 | 10642 | | | 10462 | 2004-06 | Hexagon socket countersunk head screws |",
              "as_of": "2026-08-12"
            },
            {
              "value": "10642",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 7991 | ISO 10642 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "10642",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 7991 | ISO 10642 | BS4168 | Hexagon Socket Countersunk Head Cap Screws |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "84",
      "fastener_description": "Slotted cheese head screws \u2013 Product grade A",
      "iso_standard": "1207",
      "interchangeability": "Modifications of dimensions < 2,5; dimension of slots changed; partly nominal lengths deleted; strength 8.8 deleted",
      "modification_notes": "Modifications of dimensions < 2,5; dimension of slots changed; partly nominal lengths deleted; strength 8.8 deleted",
      "id": "84",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/84/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "84 | 1207 | | | 1207 | 1994-10 | Slotted cheese head screws &#8211; Product grade A | Modifications of dimensions < 2,5; dimension of slots changed; partly nominal lengths deleted; strength 8.8 deleted |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Slotted cheese head screws \u2013 Product grade A",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "84 | 1207 | | | 1207 | 1994-10 | Slotted cheese head screws &#8211; Product grade A | Modifications of dimensions < 2,5; dimension of slots changed; partly nominal lengths deleted; strength 8.8 deleted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Head dia/height tolerances may vary.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 84 | ISO 1207 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Product grade A Slotted Cheese Head Screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 84 | ISO 1207 | BS4183 | Product grade A Slotted Cheese Head Screws |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Modifications of dimensions < 2,5; dimension of slots changed; partly nominal lengths deleted; strength 8.8 deleted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "84 | 1207 | | | 1207 | 1994-10 | Slotted cheese head screws &#8211; Product grade A | Modifications of dimensions < 2,5; dimension of slots changed; partly nominal lengths deleted; strength 8.8 deleted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 84 | ISO 1207 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "85",
      "fastener_description": "Slotted pan head screws \u2013 Product grade A",
      "iso_standard": "1580",
      "interchangeability": "Thread included; dimensions of head and slot changed; strength 8.8 deleted",
      "modification_notes": "Thread included; dimensions of head and slot changed; strength 8.8 deleted",
      "id": "85",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/85/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "85 | 1580 | | | 1580 | 1994-10 | Slotted pan head screws &#8211; Product grade A | Thread included; dimensions of head and slot changed; strength 8.8 deleted |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Slotted pan head screws \u2013 Product grade A",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "85 | 1580 | | | 1580 | 1994-10 | Slotted pan head screws &#8211; Product grade A | Thread included; dimensions of head and slot changed; strength 8.8 deleted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Product grade A Slotted Pan Head Screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 85 | ISO 1580 | BS4183 | Product grade A Slotted Pan Head Screws |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "9021",
      "fastener_description": "Washers; outside diameter \u02dc 3 x bolt diameter",
      "iso_standard": "7093-1",
      "interchangeability": "Dimensions partially changed",
      "modification_notes": "Dimensions partially changed",
      "id": "9021",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/9021/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Washers; outside diameter \u02dc 3 x bolt diameter | 9021 | 7093-1 | | | 7093-1 | 2000-11 | Plain washers &#8211; Large series &#8211; Part 1: Product grade A | Dimensions partially changed |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Washers; outside diameter \u02dc 3 x bolt diameter",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Washers; outside diameter \u02dc 3 x bolt diameter | 9021 | 7093-1 | | | 7093-1 | 2000-11 | Plain washers &#8211; Large series &#8211; Part 1: Product grade A | Dimensions partially changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Washers; outside diameter approx. 3 x bolt diameter",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "9021 | 7093-1 | | | 7093-1 | 2000-11 | Plain washers &#8211; Large series &#8211; Part 1: Product grade A | Dimensions partially changed | Washers; outside diameter approx. 3 x bolt diameter | 9021 | 7093-2 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Large OD series.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 9021 | ISO 7093 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Plain Washers with large outside diameter",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 9021 | ISO 7093 | | Plain Washers with large outside diameter |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7093-1",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Washers; outside diameter \u02dc 3 x bolt diameter | 9021 | 7093-1 | | | 7093-1 | 2000-11 | Plain washers &#8211; Large series &#8211; Part 1: Product grade A | Dimensions partially changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7093-2",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "9021 | 7093-1 | | | 7093-1 | 2000-11 | Plain washers &#8211; Large series &#8211; Part 1: Product grade A | Dimensions partially changed | Washers; outside diameter approx. 3 x bolt diameter | 9021 | 7093-2 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7093",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 9021 | ISO 7093 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "7093",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 9021 | ISO 7093 | | Plain Washers with large outside diameter |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Dimensions partially changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Washers; outside diameter \u02dc 3 x bolt diameter | 9021 | 7093-1 | | | 7093-1 | 2000-11 | Plain washers &#8211; Large series &#8211; Part 1: Product grade A | Dimensions partially changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Dimensions partially changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "9021 | 7093-1 | | | 7093-1 | 2000-11 | Plain washers &#8211; Large series &#8211; Part 1: Product grade A | Dimensions partially changed | Washers; outside diameter approx. 3 x bolt diameter | 9021 | 7093-2 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 9021 | ISO 7093 | Fully interchangeable",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "908",
      "fastener_description": "Hexagon Socket Screw Plugs with parallel screw thread",
      "id": "908",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/908/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 908 | | | Hexagon Socket Screw Plugs with parallel screw thread |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "910",
      "fastener_description": "Hexagon-duty hexagon Head Screw Plugs",
      "id": "910",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/910/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 910 | | | Hexagon-duty hexagon Head Screw Plugs |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "911",
      "fastener_description": "Hexagon Socket Screw Keys",
      "iso_standard": "2936",
      "id": "911",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/911/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 911 | ISO 2936 | | Hexagon Socket Screw Keys |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "912",
      "fastener_description": "Hexagon socket head cap screws",
      "iso_standard": "4762",
      "interchangeability": "Nominal size range changed; fine thread deleted (ISO 21269)",
      "modification_notes": "Nominal size range changed; fine thread deleted (ISO 21269)",
      "id": "912",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/912/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Hexagon socket head cap screws | 912 | 4762 | | | 4762 | 2004-06 | Hexagon socket head cap screws | Nominal size range changed; fine thread deleted (ISO 21269) |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon socket head cap screws",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon socket head cap screws | 912 | 4762 | | | 4762 | 2004-06 | Hexagon socket head cap screws | Nominal size range changed; fine thread deleted (ISO 21269) |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Primary SHCS spec (coarse).",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 912 | ISO 4762 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Socket Head Cap Screws (modified version of ISO 4762)",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 912 | ISO 4762 | BS4168 | Hexagon Socket Head Cap Screws (modified version of ISO 4762) | DIN 912 | ISO 21268 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Socket Head Cap Screws (modified version of ISO 4762)",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 912 | ISO 4762 | BS4168 | Hexagon Socket Head Cap Screws (modified version of ISO 4762) |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "4762",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon socket head cap screws | 912 | 4762 | | | 4762 | 2004-06 | Hexagon socket head cap screws | Nominal size range changed; fine thread deleted (ISO 21269) |",
              "as_of": "2026-08-12"
            },
            {
              "value": "4762",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 912 | ISO 4762 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "21268",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 912 | ISO 4762 | BS4168 | Hexagon Socket Head Cap Screws (modified version of ISO 4762) | DIN 912 | ISO 21268 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "4762",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 912 | ISO 4762 | BS4168 | Hexagon Socket Head Cap Screws (modified version of ISO 4762) |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size range changed; fine thread deleted (ISO 21269)",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon socket head cap screws | 912 | 4762 | | | 4762 | 2004-06 | Hexagon socket head cap screws | Nominal size range changed; fine thread deleted (ISO 21269) |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 912 | ISO 4762 | Fully interchangeable",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "913",
      "fastener_description": "Hexagon socket set screws with flat point",
      "iso_standard": "4026",
      "interchangeability": "Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted",
      "modification_notes": "Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted",
      "id": "913",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/913/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "913 | 4026 | | | 4026 | 2004-05 | Hexagon socket set screws with flat point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon socket set screws with flat point",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "913 | 4026 | | | 4026 | 2004-05 | Hexagon socket set screws with flat point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Headless (grub) screw, flat.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 913 | ISO 4026 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Socket Set Screws with flat point (ISO 4026 modified)",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 913 | ISO 4026 | | Hexagon Socket Set Screws with flat point (ISO 4026 modified) |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "913 | 4026 | | | 4026 | 2004-05 | Hexagon socket set screws with flat point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 913 | ISO 4026 | Fully interchangeable",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "914",
      "fastener_description": "Hexagon socket set screws with cone point",
      "iso_standard": "4027",
      "interchangeability": "Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted",
      "modification_notes": "Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted",
      "id": "914",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/914/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "914 | 4027 | | | 4027 | 2004-05 | Hexagon socket set screws with cone point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon socket set screws with cone point",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "914 | 4027 | | | 4027 | 2004-05 | Hexagon socket set screws with cone point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Headless, cone.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 914 | ISO 4027 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Socket Set Screws with cone point (ISO 4029 modified)",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 914 | ISO 4027 | | Hexagon Socket Set Screws with cone point (ISO 4029 modified) |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "914 | 4027 | | | 4027 | 2004-05 | Hexagon socket set screws with cone point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 914 | ISO 4027 | Fully interchangeable",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "915",
      "fastener_description": "Hexagon socket set screws with dog point",
      "iso_standard": "4028",
      "interchangeability": "Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted",
      "modification_notes": "Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted",
      "id": "915",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/915/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "915 | 4028 | | | 4028 | 2004-05 | Hexagon socket set screws with dog point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon socket set screws with dog point",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "915 | 4028 | | | 4028 | 2004-05 | Hexagon socket set screws with dog point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Headless, dog.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 915 | ISO 4028 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Socket Set Screws with full dog point",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 915 | ISO 4028 | | Hexagon Socket Set Screws with full dog point |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "915 | 4028 | | | 4028 | 2004-05 | Hexagon socket set screws with dog point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 915 | ISO 4028 | Fully interchangeable",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "916",
      "fastener_description": "Hexagon socket set screws with cup point",
      "iso_standard": "4029",
      "id": "916",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/916/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "916 | 4029 | | | 4029 | 2004-05 | Hexagon socket set screws with cup point |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ],
      "also_reported": [
        {
          "field": "interchangeability",
          "value": "Fully interchangeable",
          "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
          "source_quote": "DIN 916 | ISO 4029 | Fully interchangeable",
          "as_of": "2026-08-12"
        }
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon socket set screws with cup point",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "916 | 4029 | | | 4029 | 2004-05 | Hexagon socket set screws with cup point |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Headless, cup.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 916 | ISO 4029 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Socket Set Screws with cup point (ISO 4029 modified)",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 916 | ISO 4029 | | Hexagon Socket Set Screws with cup point (ISO 4029 modified) |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "918-3",
      "fastener_description": "Overview of European standards for fasteners",
      "id": "918-3",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/918-3/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 918-3 | | | Overview of European standards for fasteners |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "921",
      "fastener_description": "Slotted Pan Head Screws with large head",
      "id": "921",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/921/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 921 | | | Slotted Pan Head Screws with large head |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "923",
      "fastener_description": "Slotted Pan Head Screws with shoulder",
      "id": "923",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/923/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 923 | | | Slotted Pan Head Screws with shoulder |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "929",
      "fastener_description": "Hexagon Weld Nuts",
      "id": "929",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/929/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 929 | | | Hexagon Weld Nuts |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "93",
      "fastener_description": "Tab Washers with long tab",
      "id": "93",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/93/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 93 | | | Tab Washers with long tab |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "930",
      "fastener_description": "Fine thread pitch partially Threaded Screws",
      "id": "930",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/930/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 930 | | | Fine thread pitch partially Threaded Screws |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "931",
      "fastener_description": "Partial thread hex bolts.",
      "iso_standard": "4014",
      "interchangeability": "Fully interchangeable",
      "id": "931",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/931/",
      "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
      "source_quote": "DIN 931 | ISO 4014 | Fully interchangeable",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard"
      ],
      "also_reported": [
        {
          "field": "modification_notes",
          "value": "bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen",
          "source": "https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php",
          "source_quote": "Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zur\u00fcckgezogen wurden. Die entsprechenden ISO \u2013 Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zur\u00fcckgezogenen DIN \u2013 Normen. Dadurch sind grunds\u00e4tzliche keine Einschr\u00e4nkungen bei der Verwendungen dieser ISO \u2013 Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen.",
          "as_of": "2026-08-12"
        }
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Partial thread hex bolts.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 931 | ISO 4014 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "Sechskantschrauben mit Teilgewinde",
              "source": "https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php",
              "source_quote": "Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zur\u00fcckgezogen wurden. Die entsprechenden ISO \u2013 Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zur\u00fcckgezogenen DIN \u2013 Normen. Dadurch sind grunds\u00e4tzliche keine Einschr\u00e4nkungen bei der Verwendungen dieser ISO \u2013 Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen.",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 931 | ISO 4014 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "weitestgehend",
              "source": "https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php",
              "source_quote": "Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zur\u00fcckgezogen wurden. Die entsprechenden ISO \u2013 Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zur\u00fcckgezogenen DIN \u2013 Normen. Dadurch sind grunds\u00e4tzliche keine Einschr\u00e4nkungen bei der Verwendungen dieser ISO \u2013 Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen.",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "931-1",
      "fastener_description": "Hexagon head bolts with shank; M 1,6 to M 39 screw threads, Product grades A and B",
      "iso_standard": "4014",
      "interchangeability": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "modification_notes": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "id": "931-1",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/931-1/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Hexagon head bolts with shank; M 1,6 to M 39 screw threads, Product grades A and B | 931-1 | 4014 | 24014 | 4014 | 4014 | 2001-03 | Hexagon head bolts &#8211; Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon head bolts with shank; M 1,6 to M 39 screw threads, Product grades A and B",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon head bolts with shank; M 1,6 to M 39 screw threads, Product grades A and B | 931-1 | 4014 | 24014 | 4014 | 4014 | 2001-03 | Hexagon head bolts &#8211; Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "M1,6 to M39 Hexagon Cap Screws partially threaded - product grades A and B",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 931-1 | ISO 4014 | BS3692 | M1,6 to M39 Hexagon Cap Screws partially threaded - product grades A and B |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "931-2",
      "fastener_description": "M42 to M160x6 Hexagon Cap Screws partially threaded - product grade B",
      "iso_standard": "4014",
      "id": "931-2",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/931-2/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 931-2 | ISO 4014 | BS3692 | M42 to M160x6 Hexagon Cap Screws partially threaded - product grade B |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "933",
      "fastener_description": "Hexagon head screws \u2013 Product grades A and B",
      "iso_standard": "4017",
      "interchangeability": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "modification_notes": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "id": "933",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/933/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "933 | 4017 | 24017 | 4017 | 4017 | 2001-03 | Hexagon head screws &#8211; Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "also_reported": [
        {
          "field": "en_iso_standard",
          "value": "4017",
          "source": "https://www.dinmedia.de/en/standard/din-933/3071389",
          "source_quote": "<https://www.dinmedia.de/en/standard/din-933/2741251> DIN 933:1983-12 . This document has been replaced by: <https://www.dinmedia.de/en/standard/din-en-24017/1843857> DIN EN 24017:1992-02 , <https://www.dinmedia.de/en/standard/din-en-iso-4017/38332961> DIN EN ISO 4017:2001-03 .",
          "as_of": "2026-08-12"
        }
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon head screws \u2013 Product grades A and B",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "933 | 4017 | 24017 | 4017 | 4017 | 2001-03 | Hexagon head screws &#8211; Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Full thread hex bolts.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 933 | ISO 4017 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "M1,6 to M52 Hexagon Cap Screws fully threaded - product grades 8.8",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 933 | ISO 4017 | BS3692 | M1,6 to M52 Hexagon Cap Screws fully threaded - product grades 8.8 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "M 1,6 to M 52 hexagon head screws threaded up to the head; product grades A and B",
              "source": "https://www.dinmedia.de/en/standard/din-933/3071389",
              "source_quote": "<https://www.dinmedia.de/en/standard/din-933/2741251> DIN 933:1983-12 . This document has been replaced by: <https://www.dinmedia.de/en/standard/din-en-24017/1843857> DIN EN 24017:1992-02 , <https://www.dinmedia.de/en/standard/din-en-iso-4017/38332961> DIN EN ISO 4017:2001-03 .",
              "as_of": "2026-08-12"
            },
            {
              "value": "Sechskantschrauben mit Vollgewinde",
              "source": "https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php",
              "source_quote": "Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zur\u00fcckgezogen wurden. Die entsprechenden ISO \u2013 Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zur\u00fcckgezogenen DIN \u2013 Normen. Dadurch sind grunds\u00e4tzliche keine Einschr\u00e4nkungen bei der Verwendungen dieser ISO \u2013 Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen.",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size extended; width across flats according to DIN ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "933 | 4017 | 24017 | 4017 | 4017 | 2001-03 | Hexagon head screws &#8211; Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 933 | ISO 4017 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "weitestgehend",
              "source": "https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php",
              "source_quote": "Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zur\u00fcckgezogen wurden. Die entsprechenden ISO \u2013 Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zur\u00fcckgezogenen DIN \u2013 Normen. Dadurch sind grunds\u00e4tzliche keine Einschr\u00e4nkungen bei der Verwendungen dieser ISO \u2013 Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen.",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "modification_notes",
          "versions": [
            {
              "value": "Nominal size extended; width across flats according to DIN ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "933 | 4017 | 24017 | 4017 | 4017 | 2001-03 | Hexagon head screws &#8211; Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen",
              "source": "https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php",
              "source_quote": "Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zur\u00fcckgezogen wurden. Die entsprechenden ISO \u2013 Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zur\u00fcckgezogenen DIN \u2013 Normen. Dadurch sind grunds\u00e4tzliche keine Einschr\u00e4nkungen bei der Verwendungen dieser ISO \u2013 Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen.",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "934",
      "fastener_description": "Hexagon nuts; Metric screw threads; Product grades A and B",
      "iso_standard": "4032",
      "interchangeability": "Nominal diameter changed, height of the nut changed partially; nuts with fine thread specified in DIN EN ISO 8673; width across flats according to DIN ISO 272 included",
      "modification_notes": "Nominal diameter changed, height of the nut changed partially; nuts with fine thread specified in DIN EN ISO 8673; width across flats according to DIN ISO 272 included",
      "id": "934",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/934/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 4032 | 24032 | 4032 | 4032 | 2001-03 | Hexagon nuts, style 1 &#8211; Product grades A and B | Nominal diameter changed, height of the nut changed partially; nuts with fine thread specified in DIN EN ISO 8673; width across flats according to DIN ISO 272 included |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon nuts; Metric screw threads; Product grades A and B",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 4032 | 24032 | 4032 | 4032 | 2001-03 | Hexagon nuts, style 1 &#8211; Product grades A and B | Nominal diameter changed, height of the nut changed partially; nuts with fine thread specified in DIN EN ISO 8673; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon nuts; Metric screw threads; Product grades A and B",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 8673 | 28673 | | 8673 | 2001-03 | Hexagon nuts, style 1, with metric fine pitch thread &#8211; Product grades A and B | Nominal diameter changed, height of the nut changed partially; nuts with regular type screw thread specified in DIN EN ISO 4032; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 934 | ISO 4032 | | Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B | DIN 934 | ISO 8673 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 934 | ISO 4032 | | Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "4032",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 4032 | 24032 | 4032 | 4032 | 2001-03 | Hexagon nuts, style 1 &#8211; Product grades A and B | Nominal diameter changed, height of the nut changed partially; nuts with fine thread specified in DIN EN ISO 8673; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "8673",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 8673 | 28673 | | 8673 | 2001-03 | Hexagon nuts, style 1, with metric fine pitch thread &#8211; Product grades A and B | Nominal diameter changed, height of the nut changed partially; nuts with regular type screw thread specified in DIN EN ISO 4032; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "8673",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 934 | ISO 4032 | | Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B | DIN 934 | ISO 8673 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "4032",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 934 | ISO 4032 | | Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal diameter changed, height of the nut changed partially; nuts with fine thread specified in DIN EN ISO 8673; width across flats according to DIN ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 4032 | 24032 | 4032 | 4032 | 2001-03 | Hexagon nuts, style 1 &#8211; Product grades A and B | Nominal diameter changed, height of the nut changed partially; nuts with fine thread specified in DIN EN ISO 8673; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Nominal diameter changed, height of the nut changed partially; nuts with regular type screw thread specified in DIN EN ISO 4032; width across flats according to DIN ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 8673 | 28673 | | 8673 | 2001-03 | Hexagon nuts, style 1, with metric fine pitch thread &#8211; Product grades A and B | Nominal diameter changed, height of the nut changed partially; nuts with regular type screw thread specified in DIN EN ISO 4032; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "modification_notes",
          "versions": [
            {
              "value": "Nominal diameter changed, height of the nut changed partially; nuts with fine thread specified in DIN EN ISO 8673; width across flats according to DIN ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 4032 | 24032 | 4032 | 4032 | 2001-03 | Hexagon nuts, style 1 &#8211; Product grades A and B | Nominal diameter changed, height of the nut changed partially; nuts with fine thread specified in DIN EN ISO 8673; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Nominal diameter changed, height of the nut changed partially; nuts with regular type screw thread specified in DIN EN ISO 4032; width across flats according to DIN ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 8673 | 28673 | | 8673 | 2001-03 | Hexagon nuts, style 1, with metric fine pitch thread &#8211; Product grades A and B | Nominal diameter changed, height of the nut changed partially; nuts with regular type screw thread specified in DIN EN ISO 4032; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "935-1",
      "fastener_description": "Hexagon Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - product grades A and B",
      "id": "935-1",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/935-1/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 935-1 | | | Hexagon Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - product grades A and B |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "935-2",
      "fastener_description": "M42 to M160x6 Hexagon Head Bolts; product grade B",
      "id": "935-2",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/935-2/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 935-2 | | | M42 to M160x6 Hexagon Head Bolts; product grade B |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "935-3",
      "fastener_description": "Hexagon Slotted Nuts with metric coarse pitch thread - product grade C",
      "id": "935-3",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/935-3/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 935-3 | | | Hexagon Slotted Nuts with metric coarse pitch thread - product grade C |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "936",
      "fastener_description": "M8 to M52 and M8x1 to M52x3 hexagon thin nuts; product grades A and B",
      "id": "936",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/936/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 936 | | BS3692 | M8 to M52 and M8x1 to M52x3 hexagon thin nuts; product grades A and B |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "937",
      "fastener_description": "Hexagon Thin Castle Nuts",
      "id": "937",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/937/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 937 | | | Hexagon Thin Castle Nuts |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "938",
      "fastener_description": "Studs with a length of engagement equal to about 1 d",
      "id": "938",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/938/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 938 | | | Studs with a length of engagement equal to about 1 d |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "939",
      "fastener_description": "Studs with a length of engagement equal to about 1,25 d",
      "id": "939",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/939/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 939 | | | Studs with a length of engagement equal to about 1,25 d |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "94",
      "fastener_description": "Slotted set screws with long dog point",
      "iso_standard": "1234",
      "interchangeability": "No modifications of dimensions",
      "modification_notes": "No modifications of dimensions",
      "id": "94",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/94/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Slotted set screws with long dog point | 94 | 1234 | | | 1234 | 1998-02 | Split pins | No modifications of dimensions |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Slotted set screws with long dog point",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Slotted set screws with long dog point | 94 | 1234 | | | 1234 | 1998-02 | Split pins | No modifications of dimensions |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Split Pins",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 94 | ISO 1234 | | Split Pins |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "95",
      "fastener_description": "Slotted Raised Countersunk (oval) Head Wood Screws",
      "id": "95",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/95/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 95 | | | Slotted Raised Countersunk (oval) Head Wood Screws |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "96",
      "fastener_description": "Slotted Round Head Wood Screws",
      "id": "96",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/96/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 96 | | | Slotted Round Head Wood Screws |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "960",
      "fastener_description": "Hexagon bolts, Metric fine thread, Types m and mg",
      "iso_standard": "8765",
      "interchangeability": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "modification_notes": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "id": "960",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/960/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Nominal size extended; width across flats according to DIN ISO 272 included | Hexagon bolts, Metric fine thread, Types m and mg | 960 | 8765 |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Hexagon bolts, Metric fine thread, Types m and mg",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Nominal size extended; width across flats according to DIN ISO 272 included | Hexagon bolts, Metric fine thread, Types m and mg | 960 | 8765 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fine thread PT.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 960 | ISO 8765 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "M8x1 to M100x4 Hexagon Head Bolts with fine pitch thread - product grades A and B",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 960 | ISO 8765 | | M8x1 to M100x4 Hexagon Head Bolts with fine pitch thread - product grades A and B | DIN 960 | ISO 8676 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "M8x1 to M100x4 Hexagon Head Bolts with fine pitch thread - product grades A and B",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 960 | ISO 8765 | | M8x1 to M100x4 Hexagon Head Bolts with fine pitch thread - product grades A and B |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "8765",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Nominal size extended; width across flats according to DIN ISO 272 included | Hexagon bolts, Metric fine thread, Types m and mg | 960 | 8765 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "8765",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 960 | ISO 8765 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "8676",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 960 | ISO 8765 | | M8x1 to M100x4 Hexagon Head Bolts with fine pitch thread - product grades A and B | DIN 960 | ISO 8676 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "8765",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 960 | ISO 8765 | | M8x1 to M100x4 Hexagon Head Bolts with fine pitch thread - product grades A and B |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size extended; width across flats according to DIN ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Nominal size extended; width across flats according to DIN ISO 272 included | Hexagon bolts, Metric fine thread, Types m and mg | 960 | 8765 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 960 | ISO 8765 | Fully interchangeable",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "961",
      "fastener_description": "M 8\u00d71 to M 100\u00d74 hexagon head bolts with fine pitch thread",
      "iso_standard": "8676",
      "interchangeability": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "modification_notes": "Nominal size extended; width across flats according to DIN ISO 272 included",
      "id": "961",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/961/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "961 | 8676 | 28676 | 8676 | 8676 | 2001-03 | Hexagon head screws with metric fine pitch thread &#8211; Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "M 8\u00d71 to M 100\u00d74 hexagon head bolts with fine pitch thread",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "961 | 8676 | 28676 | 8676 | 8676 | 2001-03 | Hexagon head screws with metric fine pitch thread &#8211; Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fine thread FT.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 961 | ISO 8676 | Fully interchangeable",
              "as_of": "2026-08-12"
            },
            {
              "value": "M8x1 to M52x3 Hexagon Head Bolts with fine pitch thread - product grades A and B",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 961 | ISO 8676 | | M8x1 to M52x3 Hexagon Head Bolts with fine pitch thread - product grades A and B |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size extended; width across flats according to DIN ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "961 | 8676 | 28676 | 8676 | 8676 | 2001-03 | Hexagon head screws with metric fine pitch thread &#8211; Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Fully interchangeable",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 961 | ISO 8676 | Fully interchangeable",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "962",
      "fastener_description": "Designation system for fasteners",
      "id": "962",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/962/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 962 | | | Designation system for fasteners |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "963",
      "fastener_description": "Slotted countersunk (flat) head screws (Countersunk heads according to ISO)",
      "iso_standard": "2009",
      "interchangeability": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled",
      "modification_notes": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled",
      "id": "963",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/963/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Slotted countersunk (flat) head screws (Countersunk heads according to ISO) | 963 | 2009 | | 2009 | 2009 | 1994-10 | Slotted countersunk flat head screws (common head style) &#8211; Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Slotted countersunk (flat) head screws (Countersunk heads according to ISO)",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Slotted countersunk (flat) head screws (Countersunk heads according to ISO) | 963 | 2009 | | 2009 | 2009 | 1994-10 | Slotted countersunk flat head screws (common head style) &#8211; Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Countersink/head geometry differences.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 963 | ISO 2009 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Slotted Countersunk Head Screws (with countersunk heads as specified in ISO 2009-1972)",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 963 | ISO 2009 | BS3692 | Slotted Countersunk Head Screws (with countersunk heads as specified in ISO 2009-1972) |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Slotted countersunk (flat) head screws (Countersunk heads according to ISO) | 963 | 2009 | | 2009 | 2009 | 1994-10 | Slotted countersunk flat head screws (common head style) &#8211; Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 963 | ISO 2009 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "964",
      "fastener_description": "Slotted raised countersunk (oval) head screws (Countersunk heads according to ISO)",
      "iso_standard": "2010",
      "interchangeability": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled",
      "modification_notes": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled",
      "id": "964",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/964/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Slotted raised countersunk (oval) head screws (Countersunk heads according to ISO) | 964 | 2010 | | 2010 | 2010 | 1994-10 | Slotted raised countersunk head screws (common head style) &#8211; Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Slotted raised countersunk (oval) head screws (Countersunk heads according to ISO)",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Slotted raised countersunk (oval) head screws (Countersunk heads according to ISO) | 964 | 2010 | | 2010 | 2010 | 1994-10 | Slotted raised countersunk head screws (common head style) &#8211; Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Raised profile may differ slightly.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 964 | ISO 2010 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Slotted Raised Countersunk Oval Head Screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 964 | ISO 2010 | BS3692 | Slotted Raised Countersunk Oval Head Screws |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Slotted raised countersunk (oval) head screws (Countersunk heads according to ISO) | 964 | 2010 | | 2010 | 2010 | 1994-10 | Slotted raised countersunk head screws (common head style) &#8211; Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 964 | ISO 2010 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "965",
      "fastener_description": "Cross recessed countersunk (flat) head screws (Countersunk heads according to ISO)",
      "iso_standard": "7046-1",
      "interchangeability": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 included (see Part 2); penetration depth of cross slots changed",
      "modification_notes": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 included (see Part 2); penetration depth of cross slots changed",
      "id": "965",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/965/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Cross recessed countersunk (flat) head screws (Countersunk heads according to ISO) | 965 | 7046-1 | | 7046 | 7046-1 | 1994-10 | Countersunk flat head screws (common head style) with type H or type Z cross recess &#8211; Property class 4.8 | Nominal size changed; head dimension changed; thread length changed; strength 8.8 included (see Part 2); penetration depth of cross slots changed |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Cross recessed countersunk (flat) head screws (Countersunk heads according to ISO)",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Cross recessed countersunk (flat) head screws (Countersunk heads according to ISO) | 965 | 7046-1 | | 7046 | 7046-1 | 1994-10 | Countersunk flat head screws (common head style) with type H or type Z cross recess &#8211; Property class 4.8 | Nominal size changed; head dimension changed; thread length changed; strength 8.8 included (see Part 2); penetration depth of cross slots changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Head/countersink geometry.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 965 | ISO 7046 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Cross Recessed Countersunk Flat Head Screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 965 | ISO 7046 | BS3692 | Cross Recessed Countersunk Flat Head Screws |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7046-1",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Cross recessed countersunk (flat) head screws (Countersunk heads according to ISO) | 965 | 7046-1 | | 7046 | 7046-1 | 1994-10 | Countersunk flat head screws (common head style) with type H or type Z cross recess &#8211; Property class 4.8 | Nominal size changed; head dimension changed; thread length changed; strength 8.8 included (see Part 2); penetration depth of cross slots changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7046",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 965 | ISO 7046 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "7046",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 965 | ISO 7046 | BS3692 | Cross Recessed Countersunk Flat Head Screws |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 included (see Part 2); penetration depth of cross slots changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Cross recessed countersunk (flat) head screws (Countersunk heads according to ISO) | 965 | 7046-1 | | 7046 | 7046-1 | 1994-10 | Countersunk flat head screws (common head style) with type H or type Z cross recess &#8211; Property class 4.8 | Nominal size changed; head dimension changed; thread length changed; strength 8.8 included (see Part 2); penetration depth of cross slots changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 965 | ISO 7046 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "966",
      "fastener_description": "Cross recessed countersunk (oval) head screws (Countersunk heads according to ISO)",
      "iso_standard": "7047",
      "interchangeability": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 omitted; penetration depth of cross slots changed",
      "modification_notes": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 omitted; penetration depth of cross slots changed",
      "id": "966",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/966/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Cross recessed countersunk (oval) head screws (Countersunk heads according to ISO) | 966 | 7047 | | 7047 | 7047 | 1994-10 | Countersunk raised head screws (common head style) with type H or type Z cross recess &#8211; Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 omitted; penetration depth of cross slots changed |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Cross recessed countersunk (oval) head screws (Countersunk heads according to ISO)",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Cross recessed countersunk (oval) head screws (Countersunk heads according to ISO) | 966 | 7047 | | 7047 | 7047 | 1994-10 | Countersunk raised head screws (common head style) with type H or type Z cross recess &#8211; Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 omitted; penetration depth of cross slots changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Raised profile/diameter tolerance.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 966 | ISO 7047 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Cross Recessed Raised Countersunk Head Screws",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 966 | ISO 7047 | | Cross Recessed Raised Countersunk Head Screws |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Nominal size changed; head dimension changed; thread length changed; strength 8.8 omitted; penetration depth of cross slots changed",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Cross recessed countersunk (oval) head screws (Countersunk heads according to ISO) | 966 | 7047 | | 7047 | 7047 | 1994-10 | Countersunk raised head screws (common head style) with type H or type Z cross recess &#8211; Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 omitted; penetration depth of cross slots changed |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 966 | ISO 7047 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "970",
      "fastener_description": "Hexagon Nuts; style 1; metric coarse thread, product grades A and B; ISO 4032 modified",
      "iso_standard": "4032",
      "id": "970",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/970/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 970 | ISO 4032 | | Hexagon Nuts; style 1; metric coarse thread, product grades A and B; ISO 4032 modified |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "971-1",
      "fastener_description": "Style 1 Hexagon Nuts with metric fine pitch thread; property classes 6 and 8",
      "iso_standard": "8673",
      "id": "971-1",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/971-1/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 971-1 | ISO 8673 | | Style 1 Hexagon Nuts with metric fine pitch thread; property classes 6 and 8 |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "971-2",
      "fastener_description": "Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12",
      "iso_standard": "8674",
      "id": "971-2",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/971-2/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 971-2 | ISO 8674 | | Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12 |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "972",
      "fastener_description": "M5 to M39 Hexagon Nuts; style 1; product grade C (modified version of ISO 4034)",
      "iso_standard": "4034",
      "id": "972",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/972/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 972 | ISO 4034 | | M5 to M39 Hexagon Nuts; style 1; product grade C (modified version of ISO 4034) |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "iso_standard"
      ]
    },
    {
      "din_standard": "975",
      "fastener_description": "Threaded Rods",
      "id": "975",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/975/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 975 | | | Threaded Rods |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "976-1",
      "fastener_description": "Metric thread Stud Bolts",
      "id": "976-1",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/976-1/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 976-1 | | | Metric thread Stud Bolts |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "976-2",
      "fastener_description": "Metric interference-fit thread Stud Bolts",
      "id": "976-2",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/976-2/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 976-2 | | | Metric interference-fit thread Stud Bolts |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "977",
      "fastener_description": "Weld bosses/OD differ by series.",
      "iso_standard": "21670",
      "interchangeability": "Check spec",
      "id": "977",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/977/",
      "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
      "source_quote": "DIN 977 | ISO 21670 | Check spec",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Weld bosses/OD differ by series.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 977 | ISO 21670 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Hexagon Weld Nuts with flange",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 977 | ISO 21670 | | Hexagon Weld Nuts with flange |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "979",
      "fastener_description": "Hexagon Thin Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - Product grades A and B",
      "id": "979",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/979/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 979 | | | Hexagon Thin Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - Product grades A and B |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "980",
      "fastener_description": "All-metal prevailing torque type hexagon nuts",
      "iso_standard": "7042",
      "interchangeability": "Height of nut changed; width across flat according to ISO 272 included",
      "modification_notes": "Height of nut changed; width across flat according to ISO 272 included",
      "id": "980",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/980/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "All-metal prevailing torque type hexagon nuts | 980 | 7042 | 27042 | | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 &#8211; Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "All-metal prevailing torque type hexagon nuts",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "All-metal prevailing torque type hexagon nuts | 980 | 7042 | 27042 | | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 &#8211; Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "All-metal prevailing torque type hexagon nuts",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "All-metal prevailing torque type hexagon nuts | 980 | 7042 | 27042 | | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 &#8211; Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included | All-metal prevailing torque type hexagon nuts | 980 | 10513 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "All-metal prevailing torque type Hexagon Nuts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 980 | ISO 7042 | | All-metal prevailing torque type Hexagon Nuts | DIN 980 | ISO 10513 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "All-metal prevailing torque type Hexagon Nuts",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 980 | ISO 7042 | | All-metal prevailing torque type Hexagon Nuts |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7042",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "All-metal prevailing torque type hexagon nuts | 980 | 7042 | 27042 | | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 &#8211; Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "10513",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "All-metal prevailing torque type hexagon nuts | 980 | 7042 | 27042 | | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 &#8211; Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included | All-metal prevailing torque type hexagon nuts | 980 | 10513 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "10513",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 980 | ISO 7042 | | All-metal prevailing torque type Hexagon Nuts | DIN 980 | ISO 10513 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7042",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 980 | ISO 7042 | | All-metal prevailing torque type Hexagon Nuts |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "980, 6925",
      "fastener_description": "Prevail torque requirements vary.",
      "iso_standard": "7042, 10513",
      "interchangeability": "Check spec",
      "id": "980-6925",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/980-6925/",
      "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
      "source_quote": "DIN 980, 6925 | ISO 7042, 10513 | Check spec",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard"
      ]
    },
    {
      "din_standard": "981",
      "fastener_description": "Locknuts for use with rolling bearings",
      "id": "981",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/981/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 981 | | | Locknuts for use with rolling bearings |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "982",
      "fastener_description": "Prevailing torque type hexagon nuts with non-metallic insert",
      "iso_standard": "7040",
      "interchangeability": "Height of nut changed; width across flat according to ISO 272 included",
      "modification_notes": "Height of nut changed; width across flat according to ISO 272 included",
      "id": "982",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/982/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Prevailing torque type hexagon nuts with non-metallic insert | 982 | 7040 | 27040 | | 7040 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1 &#8211; Property classes 5, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Prevailing torque type hexagon nuts with non-metallic insert",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Prevailing torque type hexagon nuts with non-metallic insert | 982 | 7040 | 27040 | | 7040 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1 &#8211; Property classes 5, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type hexagon nuts with non-metallic insert",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Prevailing torque type hexagon nuts with non-metallic insert | 982 | 7040 | 27040 | | 7040 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1 &#8211; Property classes 5, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type hexagon nuts with non-metallic insert | 982 | 10512 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type Hexagon Nuts with non-metallic insert",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 982 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert | DIN 982 | ISO 10512 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type Hexagon Nuts with non-metallic insert",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 982 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "iso_standard",
          "versions": [
            {
              "value": "7040",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Prevailing torque type hexagon nuts with non-metallic insert | 982 | 7040 | 27040 | | 7040 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1 &#8211; Property classes 5, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "10512",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Prevailing torque type hexagon nuts with non-metallic insert | 982 | 7040 | 27040 | | 7040 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1 &#8211; Property classes 5, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included | Prevailing torque type hexagon nuts with non-metallic insert | 982 | 10512 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "10512",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 982 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert | DIN 982 | ISO 10512 |",
              "as_of": "2026-08-12"
            },
            {
              "value": "7040",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 982 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert |",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "982, 6924",
      "fastener_description": "Insert height/torque windows.",
      "iso_standard": "7040, 10512",
      "interchangeability": "Check spec",
      "id": "982-6924",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/982-6924/",
      "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
      "source_quote": "DIN 982, 6924 | ISO 7040, 10512 | Check spec",
      "verified_fields": [
        "din_standard",
        "interchangeability",
        "iso_standard"
      ]
    },
    {
      "din_standard": "983",
      "fastener_description": "Retaining Rings with lugs for use on shafts (external circlips)",
      "id": "983",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/983/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 983 | | | Retaining Rings with lugs for use on shafts (external circlips) |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "985",
      "fastener_description": "Prevailing torque type hexagon thin nuts with non-metallic insert",
      "iso_standard": "10511",
      "interchangeability": "Height of nut changed; width across flat according to ISO 272 included",
      "modification_notes": "Height of nut changed; width across flat according to ISO 272 included",
      "id": "985",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/985/",
      "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
      "source_quote": "Prevailing torque type hexagon thin nuts with non-metallic insert | 985 | 10511 | | | 10511 | 1998-02 | Prevailing torque type hexagon, thin nuts (with non-metallic insert) | Height of nut changed; width across flat according to ISO 272 included |",
      "verified_fields": [
        "din_standard",
        "fastener_description",
        "interchangeability",
        "iso_standard",
        "modification_notes"
      ],
      "disagreements": [
        {
          "field": "fastener_description",
          "versions": [
            {
              "value": "Prevailing torque type hexagon thin nuts with non-metallic insert",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Prevailing torque type hexagon thin nuts with non-metallic insert | 985 | 10511 | | | 10511 | 1998-02 | Prevailing torque type hexagon, thin nuts (with non-metallic insert) | Height of nut changed; width across flat according to ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Thin pattern; verify heights.",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 985 | ISO 10511 | Check spec",
              "as_of": "2026-08-12"
            },
            {
              "value": "Prevailing torque type Hexagon Thin Nuts with non-metallic insert",
              "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
              "source_quote": "DIN 985 | ISO 10511 | | Prevailing torque type Hexagon Thin Nuts with non-metallic insert |",
              "as_of": "2026-08-12"
            }
          ]
        },
        {
          "field": "interchangeability",
          "versions": [
            {
              "value": "Height of nut changed; width across flat according to ISO 272 included",
              "source": "https://fullerfasteners.com/tech/din-iso-en-crossover-chart/",
              "source_quote": "Prevailing torque type hexagon thin nuts with non-metallic insert | 985 | 10511 | | | 10511 | 1998-02 | Prevailing torque type hexagon, thin nuts (with non-metallic insert) | Height of nut changed; width across flat according to ISO 272 included |",
              "as_of": "2026-08-12"
            },
            {
              "value": "Check spec",
              "source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
              "source_quote": "DIN 985 | ISO 10511 | Check spec",
              "as_of": "2026-08-12"
            }
          ]
        }
      ]
    },
    {
      "din_standard": "986",
      "fastener_description": "Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert",
      "id": "986",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/986/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 986 | | | Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    },
    {
      "din_standard": "988",
      "fastener_description": "Shim Rings and supporting rings",
      "id": "988",
      "url": "https://referencesource.org/fastener-thread-standard-equivalence/988/",
      "source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
      "source_quote": "DIN 988 | | | Shim Rings and supporting rings |",
      "verified_fields": [
        "din_standard",
        "fastener_description"
      ]
    }
  ]
}