# DIN 6900 — DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable For DIN 6900, iso standard is ISO 10644; part is Screw and Washer assemblies, verified against its source on 2026-08-05. - **DIN standard:** DIN 6900 _(verified: appears in the quote below)_ - **ISO standard:** ISO 10644 _(verified: appears in the quote below)_ - **Part:** Screw and Washer assemblies _(verified: appears in the quote below)_ ## What the source says > DIN 6900 | ISO 10644 | | Screw and Washer assemblies | ## 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/).