# DIN 127 — DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable For DIN 127, bs standard is BS4464B; part is Spring Lock Washers with square ends or tang ends, verified against its source on 2026-08-05. - **DIN standard:** DIN 127 _(verified: appears in the quote below)_ - **BS standard:** BS4464B _(verified: appears in the quote below)_ - **Part:** Spring Lock Washers with square ends or tang ends _(verified: appears in the quote below)_ ## What the source says > DIN 127 | | BS4464B | Spring Lock Washers with square ends or tang ends | ## 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/).