# 125-2 — Fastener standard equivalences: DIN to ISO / EN crossover

For 125-2, fastener description is Product grade A washers with a hardness from 300 HV, designed for use with hexagon head bolts and nuts; iso equivalent is 7089; interchangeability is Without chamfer, up to nominal diameter 64; modification notes is Without chamfer, up to nominal diameter 64, verified against its source on 2026-08-12.

- **DIN standard:** 125-2 _(verified: appears in the quote below)_
- **Fastener description:** Product grade A washers with a hardness from 300 HV, designed for use with hexagon head bolts and nuts _(verified: appears in the quote below)_
- **ISO equivalent:** 7089 _(verified: appears in the quote below)_
- **Interchangeability:** Without chamfer, up to nominal diameter 64 _(verified: appears in the quote below)_
- **Modification notes:** Without chamfer, up to nominal diameter 64 _(verified: appears in the quote below)_

## What the source says

> 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 – Normal series, Product grade A | Without chamfer, up to nominal diameter 64 |

## 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.

### ISO equivalent

fullerfasteners.com says iso equivalent is **7089**, as of 2026-08-12.

> 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 – Normal series, Product grade A | Without chamfer, up to nominal diameter 64 |

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

fullerfasteners.com says iso equivalent is **7090**, as of 2026-08-12.

> 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 – 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 |

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


## Source

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

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/).