Hexagon socket head flange machine screws
DIN251
Diameter range: M5-M12 Length range: 8mm-60mm
| standard | DIN German standard |
|---|---|
| Groove | Hexagon socket |
| head shape | cylinder |
| Thread | Fully threaded |
| d | M4 | M5 | M6 | M8 | M10 | M10 |
|---|---|---|---|---|---|---|
| P | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.5 |
| dk | 6.78~7 | 7.72~8 | 9.7~10 | 12.7~13 | 15.7~16 | 20 |
| k | 3.82~4 | 4.82~5 | 5.7~6 | 7.7~8 | 9.7~10 | 19.48 |
| dc | 8.8~9 | 10.7~11 | 12.3~12.6 | 15.7~16 | 19.7~20 | 6.86 |
| c | 1~1.2 | 1~1.2 | 1.3~1.5 | 1.8~2 | 2~2.2 | 5.5 |
| s | 3 | 4 | 5 | 6 | 8 | 6.02 |
| t | 2 | 2.5 | 3 | 4 | 5 | 6.14 |
| 齿数 | 18 | 20 | 24 | 24 | 30 | 4.4 |
