# 6325 — Fastener standard equivalences: DIN to ISO / EN crossover

For 6325, fastener description is Parallel pins, Hardened; Tolerance Zone m6; iso equivalent is 8734; interchangeability is Some other nominal lengths defined; modification notes is Some other nominal lengths defined, verified against its source on 2026-08-12.

- **DIN standard:** 6325 _(verified: appears in the quote below)_
- **Fastener description:** Parallel pins, Hardened; Tolerance Zone m6 _(verified: appears in the quote below)_
- **ISO equivalent:** 8734 _(verified: appears in the quote below)_
- **Interchangeability:** Some other nominal lengths defined _(verified: appears in the quote below)_
- **Modification notes:** Some other nominal lengths defined _(verified: appears in the quote below)_

## What the source says

> 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 |

## 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 **Parallel pins, Hardened; Tolerance Zone m6**, as of 2026-08-12.

> 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 |

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

trfastenings.com says fastener description is **Parallel Pins, hardened: tolerance zone m6**, as of 2026-08-12.

> DIN 6325 | ISO 8734 | | Parallel Pins, hardened: tolerance zone m6 |

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


## Source

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