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| 螺纹规格d | d2 | t≈ | d1 |
| 1.6 | 3.7 | 1 | 1.8 |
| 2 | 4.5 | 1.2 | 2.4 |
| 2.5 | 5.6 | 1.5 | 2.9 |
| 3 | 6.4 | 1.6 | 3.4 |
| 3.5 | 8.4 | 2.4 | 3.9 |
| 4 | 9.6 | 2.7 | 4.5 |
| 5 | 10.6 | 2.7 | 5.5 |
| 6 | 12.6 | 3.3 | 6.6 |
| 8 | 17.6 | 4.6 | 9 |
| 10 | 20.3 | 5 | 11 |
| 12 | 24.4 | 6 | 13.6 |
| 14 | 28.4 | 7 | 15.5 |
| 16 | 32.4 | 8 | 17.5 |
| 20 | 40.4 | 10 | 22 |
