# 916 — Fastener standard equivalences: DIN to ISO / EN crossover

For 916, fastener description is Hexagon socket set screws with cup point; iso equivalent is 4029, verified against its source on 2026-08-12.

- **DIN standard:** 916 _(verified: appears in the quote below)_
- **Fastener description:** Hexagon socket set screws with cup point _(verified: appears in the quote below)_
- **ISO equivalent:** 4029 _(verified: appears in the quote below)_
- **Interchangeability:** Fully interchangeable _(per monsterbolts.com, not stated by the source above)_

## What the source says

> 916 | 4029 | | | 4029 | 2004-05 | Hexagon socket set screws with cup point |

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### Fastener description

fullerfasteners.com says fastener description is **Hexagon socket set screws with cup point**, as of 2026-08-12.

> 916 | 4029 | | | 4029 | 2004-05 | Hexagon socket set screws with cup point |

Source: https://fullerfasteners.com/tech/din-iso-en-crossover-chart/

monsterbolts.com says fastener description is **Headless, cup.**, as of 2026-08-12.

> DIN 916 | ISO 4029 | Fully interchangeable

Source: https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners

trfastenings.com says fastener description is **Hexagon Socket Set Screws with cup point (ISO 4029 modified)**, as of 2026-08-12.

> DIN 916 | ISO 4029 | | Hexagon Socket Set Screws with cup point (ISO 4029 modified) |

Source: https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards


## Source

- https://fullerfasteners.com/tech/din-iso-en-crossover-chart/
- https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners
- https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards

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/).