ISO 7040 hexagon lock nut, M3, sst 72 h, Article number 70408031SST072. Property class / material: steel class 8, surface finish zinc plated. Hexagon Lock Nut manufactured to ISO 7040 with ISO metric (M) thread, coarse pitch, fully threaded. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution.
| Standard | ISO 7040 |
| Property class / grade | CL.8 |
| Class (detailed) | CL.8 |
| Thread type | M |
| Thread diameter | 3 mm |
| Pitch | 0.5 mm |
| Thread pitch class | Coarse |
| Thread direction | Right |
| Threading | Fully Threaded |
| Key width (across flats) | 5.5 mm |
| Surface treatment | Zinc Bright Passivation Fe/Zn P1 (ZPL 3+) |
| Surface treatment code | ZPL |
| Nut height | 4.5 mm |
| Thread standard | ISO metric (M) |
| Salt spray test | 72 h (ISO 9227) |
| Article number | 70408031SST072 |
| Category | Nuts |
| Material | Steel class 8 |
| Primary standard | ISO 7040 |
| Standard size | M3 |
| Thread standard | ISO metric (M) |
| MOQ | 1 |