# DIN 986 — DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable For DIN 986, part is Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert, verified against its source on 2026-08-05. - **DIN standard:** DIN 986 _(verified: appears in the quote below)_ - **Part:** Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert _(verified: appears in the quote below)_ ## What the source says > DIN 986 | | | Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert | ## 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/).