Wurth 040720 DIN 125-1 / ISO 7089 washer, A4 stainless (AISI 316). IMPA 692040. Used in general machinery assembly, structural steelwork and pressure-boundary flanged joints per DIN, ISO and ASME B18 dimensional standards. EN 10204 3.1 mill cert available on request.; Standards: ISO 3506-1, EN 10204, DIN standard, ISO parts; HS code: 7318.22; IMPA: 692040.
| Material | A4 Stainless Steel (AISI 316) |
| Standard | DIN 125-1 / ISO 7089 |
| Approval | ISO 3506-1 (A2/A4 stainless) |
| Thread size | M20 |
| Material | A4 Stainless Steel (AISI 316) |
| Primary standard | DIN 125-1 / ISO 7089 |
| MOQ | 1 |
DIN standard fastener. Interchangeable with equivalent DIN/ISO parts from Bossard, Fabory, Wurth, Keller & Kalmbach.