# 433-1 — Fastener standard equivalences: DIN to ISO / EN crossover

For 433-1, fastener description is Product grade A washers with a hardness up to 250 HV, designed for use with cheese head screws; iso equivalent is 7092; interchangeability is Pyramid diamond hardness 140 HV cancelled; rating changed; modification notes is Pyramid diamond hardness 140 HV cancelled; rating changed, verified against its source on 2026-08-12.

- **DIN standard:** 433-1 _(verified: appears in the quote below)_
- **Fastener description:** Product grade A washers with a hardness up to 250 HV, designed for use with cheese head screws _(verified: appears in the quote below)_
- **ISO equivalent:** 7092 _(verified: appears in the quote below)_
- **Interchangeability:** Pyramid diamond hardness 140 HV cancelled; rating changed _(verified: appears in the quote below)_
- **Modification notes:** Pyramid diamond hardness 140 HV cancelled; rating changed _(verified: appears in the quote below)_

## What the source says

> Product grade A washers with a hardness up to 250 HV, designed for use with cheese head screws | 433-1 | 7092 | | | 7092 | 2000-11 | Plain washers – Small series, Product grade A | Pyramid diamond hardness 140 HV cancelled; rating 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 **Product grade A washers with a hardness up to 250 HV, designed for use with cheese head screws**, as of 2026-08-12.

> Product grade A washers with a hardness up to 250 HV, designed for use with cheese head screws | 433-1 | 7092 | | | 7092 | 2000-11 | Plain washers – Small series, Product grade A | Pyramid diamond hardness 140 HV cancelled; rating changed |

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

trfastenings.com says fastener description is **Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws**, as of 2026-08-12.

> DIN 433-1 | ISO 7092 | | Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws |

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/).