DIN 9021 — Washers; outside diameter ˜ 3 x bolt diameter — ISO 7093-1 or 7093-2 or 7093 — sources disagree
What is the din standard for DIN 9021 — Washers; outside diameter ˜ 3 x bolt diameter — ISO 7093-1 or 7093-2 or 7093 — sources disagree?
For DIN 9021, fastener description is Washers; outside diameter ˜ 3 x bolt diameter; iso equivalent is disputed: 7093-1 per fullerfasteners.com, 7093-2 per fullerfasteners.com, 7093 per monsterbolts.com, 1 more; en iso number is 7093-1; date of current standard/modified is 2000-11; title of replacement standard is Plain washers – Large series – Part 1: Product grade A, verified against its source on 2026-10-12.
Washers; outside diameter ˜ 3 x bolt diameter | 9021 | 7093-1 | | | 7093-1 | 2000-11 | Plain washers – Large series – Part 1: Product grade A | Dimensions partially changed |
— fullerfasteners.com, retrieved 2026-09-22
- DIN standard
- 9021 verified
- Fastener description
- Washers; outside diameter ˜ 3 x bolt diameter verified
- ISO equivalent
- 7093-1 sources disagree
- EN ISO number
- 7093-1 verified
- Date of current standard/modified
- 2000-11 verified
- Title of replacement standard
- Plain washers – Large series – Part 1: Product grade A verified
- Modification notes
- Dimensions partially changed verified
- Interchangeability
- Fully interchangeable per monsterbolts.com
- Variant note
- Large OD series. per monsterbolts.com
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 — deciding between them is yours, not ours.
ISO equivalent
fullerfasteners.com says iso equivalent is 7093-1, as of 2026-09-22.
Washers; outside diameter ˜ 3 x bolt diameter | 9021 | 7093-1 | | | 7093-1 | 2000-11 | Plain washers – Large series – Part 1: Product grade A | Dimensions partially changed |
https://fullerfasteners.com/tech/din-iso-en-crossover-chart/
fullerfasteners.com says iso equivalent is 7093-2, as of 2026-09-22.
Washers; outside diameter approx. 3 x bolt diameter | 9021 | 7093-2 | | | 7093-2 | 2000-11 | Plain washers – Large series – Part 2: Product grade C | Dimensions partially changed |
https://fullerfasteners.com/tech/din-iso-en-crossover-chart/
monsterbolts.com says iso equivalent is 7093, as of 2026-09-21.
Washer, Plain Large | DIN 9021 | ISO 7093 | Fully interchangeable | Large OD series.
https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners
trfastenings.com says iso equivalent is 7093, as of 2026-08-12.
DIN 9021 | ISO 7093 | | Plain Washers with large outside diameter |
https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards
Sources
- fullerfasteners.comhttps://fullerfasteners.com/tech/din-iso-en-crossover-chart/
- monsterbolts.comhttps://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners
- trfastenings.comhttps://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards