# DIN 428 — DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable

For DIN 428, iso standard is ISO 4034; part is Hexagon Nuts, Grade C, verified against its source on 2026-08-05.

- **DIN standard:** DIN 428 _(verified: appears in the quote below)_
- **ISO standard:** ISO 4034 _(verified: appears in the quote below)_
- **Part:** Hexagon Nuts, Grade C _(verified: appears in the quote below)_

## What the source says

> DIN 428 | ISO 4034 | | Hexagon Nuts, Grade C |

## Source

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

Last verified: 2026-08-05. Review by: 2029-08-04.
Part of [DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable](https://referencesource.org/fastener-standard-interchangeability-exceptions/).