# 6927 — Fastener standard equivalences: DIN to ISO / EN crossover For 6927, fastener description is Prevailing torque type – All-metal hexagon nuts with flange; iso equivalent is 7044; en iso number is 1664; interchangeability is Width across flat M10 changed; modification notes is Width across flat M10 changed, verified against its source on 2026-08-12. - **DIN standard:** 6927 _(verified: appears in the quote below)_ - **Fastener description:** Prevailing torque type – All-metal hexagon nuts with flange _(verified: appears in the quote below)_ - **ISO equivalent:** 7044 _(verified: appears in the quote below)_ - **EN ISO number:** 1664 _(verified: appears in the quote below)_ - **Interchangeability:** Width across flat M10 changed _(verified: appears in the quote below)_ - **Modification notes:** Width across flat M10 changed _(verified: appears in the quote below)_ ## What the source says > 6927 | | 1664 | | 7044 | 1998-02 | Prevailing torque type – All-metal hexagon nuts with flange | Width across flat M10 changed | ## Sources disagree More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from. ### Fastener description fullerfasteners.com says fastener description is **Prevailing torque type – All-metal hexagon nuts with flange**, as of 2026-08-12. > 6927 | | 1664 | | 7044 | 1998-02 | Prevailing torque type – All-metal hexagon nuts with flange | Width across flat M10 changed | Source: https://fullerfasteners.com/tech/din-iso-en-crossover-chart/ monsterbolts.com says fastener description is **Variant series.**, as of 2026-08-12. > DIN 6927 | DIN EN 1664, 1667 | Check spec Source: https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners trfastenings.com says fastener description is **Prevailing torque type All-Metal Nuts with flange**, as of 2026-08-12. > DIN 6927 | ISO 7044 | | Prevailing torque type All-Metal Nuts with flange | DIN 6927 | ISO 12126 | Source: https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards trfastenings.com says fastener description is **Prevailing torque type All-Metal Nuts with flange**, as of 2026-08-12. > DIN 6927 | ISO 7044 | | Prevailing torque type All-Metal Nuts with flange | Source: https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards ### ISO equivalent fullerfasteners.com says iso equivalent is **7044**, as of 2026-08-12. > 6927 | | 1664 | | 7044 | 1998-02 | Prevailing torque type – All-metal hexagon nuts with flange | Width across flat M10 changed | Source: https://fullerfasteners.com/tech/din-iso-en-crossover-chart/ monsterbolts.com says iso equivalent is **1664, 1667**, as of 2026-08-12. > DIN 6927 | DIN EN 1664, 1667 | Check spec Source: https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners trfastenings.com says iso equivalent is **12126**, as of 2026-08-12. > DIN 6927 | ISO 7044 | | Prevailing torque type All-Metal Nuts with flange | DIN 6927 | ISO 12126 | Source: https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards trfastenings.com says iso equivalent is **7044**, as of 2026-08-12. > DIN 6927 | ISO 7044 | | Prevailing torque type All-Metal Nuts with flange | Source: https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards ### Interchangeability fullerfasteners.com says interchangeability is **Width across flat M10 changed**, as of 2026-08-12. > 6927 | | 1664 | | 7044 | 1998-02 | Prevailing torque type – All-metal hexagon nuts with flange | Width across flat M10 changed | Source: https://fullerfasteners.com/tech/din-iso-en-crossover-chart/ monsterbolts.com says interchangeability is **Check spec**, as of 2026-08-12. > DIN 6927 | DIN EN 1664, 1667 | Check spec Source: https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners ## Source - https://fullerfasteners.com/tech/din-iso-en-crossover-chart/ - https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners - https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards - https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards Last verified: 2026-08-12. Review by: 2028-08-11. Part of [Fastener standard equivalences: DIN to ISO / EN crossover](https://referencesource.org/fastener-thread-standard-equivalence/).