# 913 — Fastener standard equivalences: DIN to ISO / EN crossover

For 913, fastener description is Hexagon socket set screws with flat point; iso equivalent is 4026; interchangeability is Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted; modification notes is Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted, verified against its source on 2026-08-12.

- **DIN standard:** 913 _(verified: appears in the quote below)_
- **Fastener description:** Hexagon socket set screws with flat point _(verified: appears in the quote below)_
- **ISO equivalent:** 4026 _(verified: appears in the quote below)_
- **Interchangeability:** Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted _(verified: appears in the quote below)_
- **Modification notes:** Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted _(verified: appears in the quote below)_

## What the source says

> 913 | 4026 | | | 4026 | 2004-05 | Hexagon socket set screws with flat point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |

## 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 **Hexagon socket set screws with flat point**, as of 2026-08-12.

> 913 | 4026 | | | 4026 | 2004-05 | Hexagon socket set screws with flat point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |

Source: https://fullerfasteners.com/tech/din-iso-en-crossover-chart/

monsterbolts.com says fastener description is **Headless (grub) screw, flat.**, as of 2026-08-12.

> DIN 913 | ISO 4026 | Fully interchangeable

Source: https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners

trfastenings.com says fastener description is **Hexagon Socket Set Screws with flat point (ISO 4026 modified)**, as of 2026-08-12.

> DIN 913 | ISO 4026 | | Hexagon Socket Set Screws with flat point (ISO 4026 modified) |

Source: https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards


### Interchangeability

fullerfasteners.com says interchangeability is **Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted**, as of 2026-08-12.

> 913 | 4026 | | | 4026 | 2004-05 | Hexagon socket set screws with flat point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted |

Source: https://fullerfasteners.com/tech/din-iso-en-crossover-chart/

monsterbolts.com says interchangeability is **Fully interchangeable**, as of 2026-08-12.

> DIN 913 | ISO 4026 | Fully interchangeable

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

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/).