125-1
For 125-1, fastener description is Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts; iso equivalent is 7089; interchangeability is Without chamfer, up to nominal diameter 64; modification notes is Without chamfer, up to nominal diameter 64, verified against its source on 2026-08-12.
- DIN standard
- 125-1 verified
- Fastener description
- Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts verified
- ISO equivalent
- 7089 verified
- Interchangeability
- Without chamfer, up to nominal diameter 64 verified
- Modification notes
- Without chamfer, up to nominal diameter 64 verified
What the source says
Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts | 125-1 | 7089 | | | 7089 | 2000-11 | Plain washers – Normal series, Product grade A | Without chamfer, up to nominal diameter 64 |
— fullerfasteners.com, retrieved 2026-08-12
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 7089, as of 2026-08-12.
Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts | 125-1 | 7089 | | | 7089 | 2000-11 | Plain washers – Normal series, Product grade A | Without chamfer, up to nominal diameter 64 |
https://fullerfasteners.com/tech/din-iso-en-crossover-chart/
fullerfasteners.com says iso equivalent is 7090, as of 2026-08-12.
Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts | 125-1 | 7089 | | | 7089 | 2000-11 | Plain washers – Normal series, Product grade A | Without chamfer, up to nominal diameter 64 | Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts | 125-1 | 7090 |
https://fullerfasteners.com/tech/din-iso-en-crossover-chart/
Source
- fullerfasteners.comhttps://fullerfasteners.com/tech/din-iso-en-crossover-chart/