# 1477 — Fastener standard equivalences: DIN to ISO / EN crossover

For 1477, fastener description is Grooved pins with countersunk head; iso equivalent is 8747; interchangeability is Chamfer redefined; modification notes is Chamfer redefined, verified against its source on 2026-08-12.

- **DIN standard:** 1477 _(verified: appears in the quote below)_
- **Fastener description:** Grooved pins with countersunk head _(verified: appears in the quote below)_
- **ISO equivalent:** 8747 _(verified: appears in the quote below)_
- **Interchangeability:** Chamfer redefined _(verified: appears in the quote below)_
- **Modification notes:** Chamfer redefined _(verified: appears in the quote below)_

## What the source says

> Grooved pins with countersunk head | 1477 | 8747 | 28747 | | 8747 | 1998-03 | Grooved pins with countersunk head | Chamfer redefined |

## 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 **Grooved pins with countersunk head**, as of 2026-08-12.

> Grooved pins with countersunk head | 1477 | 8747 | 28747 | | 8747 | 1998-03 | Grooved pins with countersunk head | Chamfer redefined |

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

trfastenings.com says fastener description is **Countersunk Head Grooved Pins**, as of 2026-08-12.

> DIN 1477 | ISO 8747 | | Countersunk Head Grooved Pins |

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


## Source

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