# 1440 — Fastener standard equivalences: DIN to ISO / EN crossover

For 1440, fastener description is Plain washers for clevis pins; product grade A; iso equivalent is 8738; en iso number is 28738; interchangeability is Nominal sizes changed; modification notes is Nominal sizes changed, verified against its source on 2026-08-12.

- **DIN standard:** 1440 _(verified: appears in the quote below)_
- **Fastener description:** Plain washers for clevis pins; product grade A _(verified: appears in the quote below)_
- **ISO equivalent:** 8738 _(verified: appears in the quote below)_
- **EN ISO number:** 28738 _(verified: appears in the quote below)_
- **Interchangeability:** Nominal sizes changed _(verified: appears in the quote below)_
- **Modification notes:** Nominal sizes changed _(verified: appears in the quote below)_

## What the source says

> 1440 | | 28738 | | 8738 | 1992-10 | Plain washers for clevis pins; product grade A | Nominal sizes 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 **Plain washers for clevis pins; product grade A**, as of 2026-08-12.

> 1440 | | 28738 | | 8738 | 1992-10 | Plain washers for clevis pins; product grade A | Nominal sizes changed |

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

trfastenings.com says fastener description is **Medium type washers for pins**, as of 2026-08-12.

> DIN 1440 | ISO 8738 | | Medium type washers for pins |

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/).