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

For 85, fastener description is Slotted pan head screws – Product grade A; iso equivalent is 1580; interchangeability is Thread included; dimensions of head and slot changed; strength 8.8 deleted; modification notes is Thread included; dimensions of head and slot changed; strength 8.8 deleted, verified against its source on 2026-08-12.

- **DIN standard:** 85 _(verified: appears in the quote below)_
- **Fastener description:** Slotted pan head screws – Product grade A _(verified: appears in the quote below)_
- **ISO equivalent:** 1580 _(verified: appears in the quote below)_
- **Interchangeability:** Thread included; dimensions of head and slot changed; strength 8.8 deleted _(verified: appears in the quote below)_
- **Modification notes:** Thread included; dimensions of head and slot changed; strength 8.8 deleted _(verified: appears in the quote below)_

## What the source says

> 85 | 1580 | | | 1580 | 1994-10 | Slotted pan head screws – Product grade A | Thread included; dimensions of head and slot changed; strength 8.8 deleted |

## 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 **Slotted pan head screws – Product grade A**, as of 2026-08-12.

> 85 | 1580 | | | 1580 | 1994-10 | Slotted pan head screws – Product grade A | Thread included; dimensions of head and slot changed; strength 8.8 deleted |

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

trfastenings.com says fastener description is **Product grade A Slotted Pan Head Screws**, as of 2026-08-12.

> DIN 85 | ISO 1580 | BS4183 | Product grade A Slotted Pan Head Screws |

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/).