# 439-2 — Fastener standard equivalences: DIN to ISO / EN crossover

For 439-2, fastener description is Hexagon thin nuts with M 1,6 to M 52 and M 8×1 to M 52×3 threads; iso equivalent is 4035; interchangeability is In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed; modification notes is In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed, recorded from its source on 2026-08-12.

- **DIN standard:** 439-2 _(verified: appears in the quote below)_
- **Fastener description:** Hexagon thin nuts with M 1,6 to M 52 and M 8×1 to M 52×3 threads
- **ISO equivalent:** 4035 _(verified: appears in the quote below)_
- **Interchangeability:** In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed _(verified: appears in the quote below)_
- **Modification notes:** In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed _(verified: appears in the quote below)_

## What the source says

> 439-2 | 4035 | 24035 | | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) – Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) 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 **Hexagon thin nuts with M 1,6 to M 52 and M 8×1 to M 52×3 threads**, as of 2026-08-12.

> 439-2 | 4035 | 24035 | | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) – Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed |

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

fullerfasteners.com says fastener description is **Hexagon thin nuts with M 1,6 to M 52 and M 8×1 to M 52×3 threads**, as of 2026-08-12.

> 439-2 | 4035 | 24035 | 4035 | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) – 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 |

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

trfastenings.com says fastener description is **Chamfered Hexagon Thin Nuts - product grades A and B**, as of 2026-08-12.

> DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B |

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

fullerfasteners.com says fastener description is **Hexagon thin nuts with M 1,6 to M 52 and M 8×1 to M 52×3 threads**, as of 2026-08-12.

> 439-2 | 8675 | 28675 | | 8675 | 2001-03 | Hexagon thin nuts (unchamfered) with metric fine pitch thread – 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 |

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

trfastenings.com says fastener description is **Chamfered Hexagon Thin Nuts - product grades A and B**, as of 2026-08-12.

> DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B | DIN 439-2 | ISO 8675 |

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


### ISO equivalent

fullerfasteners.com says iso equivalent is **4035**, as of 2026-08-12.

> 439-2 | 4035 | 24035 | | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) – Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed |

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

fullerfasteners.com says iso equivalent is **4035**, as of 2026-08-12.

> 439-2 | 4035 | 24035 | 4035 | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) – 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 |

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

trfastenings.com says iso equivalent is **4035**, as of 2026-08-12.

> DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B |

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

fullerfasteners.com says iso equivalent is **8675**, as of 2026-08-12.

> 439-2 | 8675 | 28675 | | 8675 | 2001-03 | Hexagon thin nuts (unchamfered) with metric fine pitch thread – 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 |

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

trfastenings.com says iso equivalent is **8675**, as of 2026-08-12.

> DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B | DIN 439-2 | ISO 8675 |

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


### Interchangeability

fullerfasteners.com says interchangeability is **In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed**, as of 2026-08-12.

> 439-2 | 4035 | 24035 | | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) – Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed |

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

fullerfasteners.com says interchangeability is **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.

> 439-2 | 4035 | 24035 | 4035 | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) – 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 |

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

fullerfasteners.com says interchangeability is **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.

> 439-2 | 8675 | 28675 | | 8675 | 2001-03 | Hexagon thin nuts (unchamfered) with metric fine pitch thread – 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 |

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


### Modification notes

fullerfasteners.com says modification notes is **In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed**, as of 2026-08-12.

> 439-2 | 4035 | 24035 | | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) – Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed |

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

fullerfasteners.com says modification notes is **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.

> 439-2 | 4035 | 24035 | 4035 | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) – 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 |

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

fullerfasteners.com says modification notes is **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.

> 439-2 | 8675 | 28675 | | 8675 | 2001-03 | Hexagon thin nuts (unchamfered) with metric fine pitch thread – 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 |

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


## Source

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