DIN555-1987 六角螺母标准
六角螺母
执行标准：DIN555-1987
| 公称直径 | 螺距 | k | S | ||
| d | P | mx | min | max | min |
| M5 | 0.8 | 4.6 | 3.4 | 8 | 7.64 |
| M6 | 1 | 5.6 | 4.4 | 10 | 9. 64 |
| M8 | 1.25 | 7.25 | 5.75 | 13 | 12.57 |
| M10 | 1.5 | 8.75 | 7.25 | 17 | 16.57 |
| M12 | 1.75 | 10.75 | 9.25 | 19 | 18.46 |
| M16 | 2 | 13.9 | 12.1 | 24 | 23.16 |
| M20 | 2.5 | 16.9 | 15.1 | 30 | 29.16 |
| M22 | 2.5 | 18.9 | 17.1 | 32 | 31 |
| M24 | 3 | 20.05 | 17.95 | 36 | 35 |
| M27 | 3 | 23.05 | 20.95 | 41 | 40 |
| M30 | 3.5 | 25.05 | 22.95 | 46 | 45 |