Large flat head hexagon chamfered machine screws
National standard
Diameter range: M2-M12 Length range: 2mm-150mm
| standard | GB national standard |
|---|---|
| Groove | Hexagon socket |
| head shape | Big crew cut |
| Thread | Fully threaded |
| Nominal diameter (d) | Pitch(p) | Head thickness (k) | Head diameter (dk) | Hexagonal opposite sides(s) | Applicable wrench size |
|---|---|---|---|---|---|
| M2 | 0.4 | 1 | 4.5 | 1.3 | 1.27 |
| M2.5 | 0.45 | 1.2 | 5.5 | 1.5 | 1.5 |
| M3 | 0.5 | 1.5 | 7 | 2 | 2 |
| M4 | 0.7 | 1.8 | 8.5 | 2.5 | 2.5 |
| M5 | 0.8 | 2.3 | 10.5 | 3 | 3 |
| M6 | 1 | 2.6 | 12.5 | 4 | 4 |
| M8 | 1.25 | 3 | 13.8 | 5 | 5 |
| M10 | 1.5 | 3.8 | 17 | 6 | 6 |
| M12 | 1.75 | 5 | 20 | 8 | 8 |
