DIN7972 开槽沉头自攻钉标准
开槽沉头自攻钉
执行标准：DIN7972(ISO1482)
| 公称直径d | dk | k | n | t |
| ST2.2 | 4.3 | 1.3 | 0.7 | 0.6 |
| ST2.9 | 5.5 | 1.7 | 1 | 0.85 |
| ST3.5 | 6.8 | 2.1 | 1.2 | 1.2 |
| ST3.9 | 7.5 | 2.3 | 1.51 | 1.3 |
| ST4.2 | 8.1 | 2.5 | 1.51 | 1.3 |
| ST4.8 | 9.5 | 3 | 1.51 | 1.4 |
| ST5.5 | 10.8 | 3.4 | 1.91 | 1.5 |
| ST6.3 | 12.4 | 3.8 | 1.91 | 1.6 |
开槽沉头自攻钉
执行标准：DIN7972(ISO1482)
| 公称直径d | dk | k | n | t |
| ST2.2 | 4.3 | 1.3 | 0.7 | 0.6 |
| ST2.9 | 5.5 | 1.7 | 1 | 0.85 |
| ST3.5 | 6.8 | 2.1 | 1.2 | 1.2 |
| ST3.9 | 7.5 | 2.3 | 1.51 | 1.3 |
| ST4.2 | 8.1 | 2.5 | 1.51 | 1.3 |
| ST4.8 | 9.5 | 3 | 1.51 | 1.4 |
| ST5.5 | 10.8 | 3.4 | 1.91 | 1.5 |
| ST6.3 | 12.4 | 3.8 | 1.91 | 1.6 |