# DIN 971-2 — DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable For DIN 971-2, iso standard is ISO 8674; part is Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12, verified against its source on 2026-08-05. - **DIN standard:** DIN 971-2 _(verified: appears in the quote below)_ - **ISO standard:** ISO 8674 _(verified: appears in the quote below)_ - **Part:** Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12 _(verified: appears in the quote below)_ ## What the source says > DIN 971-2 | ISO 8674 | | Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12 | ## 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/).