# 6915 — Fastener standard equivalences: DIN to ISO / EN crossover For 6915, fastener description is High-strength hexagon nuts with large widths across flats for structural steel bolting; en iso number is 14399-4, verified against its source on 2026-08-12. - **DIN standard:** 6915 _(verified: appears in the quote below)_ - **Fastener description:** High-strength hexagon nuts with large widths across flats for structural steel bolting _(verified: appears in the quote below)_ - **EN ISO number:** 14399-4 _(verified: appears in the quote below)_ ## What the source says > High-strength hexagon nuts with large widths across flats for structural steel bolting | 6915 | | 14399-4 | ## Source - https://fullerfasteners.com/tech/din-iso-en-crossover-chart/ 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/).