| 英制螺纹 | 公制螺纹 | 针车用螺纹 | ||||
| 规格(UNEF) | 钻孔径 | 规格 | 滚造径 | 规格 | 滚造径 | |
| 硬材 | 软材 | |||||
| W 1/8 - 40 | 2.65 | 2.60 | M3×0.5 | 2.63-2.60 | SM1/8-40 | 2.735-2.688 |
| W 5/32 - 32 | 3.25 | 3.20 | M3.0×0.6 | 2.56-2.53 | SM1/8-44 | 2.769-2.722 |
| W 3/16 - 24 | 3.75 | 3.70 | M3.5×0.6 | 3.06-3.03 | SM9/64-40 | 3.128-3.083 |
| W 1/4 - 20 | 5.10 | 5.00 | M4.0×0.7 | 3.49-3.45 | SM11/64-40 | 3.855-3.805 |
| W 5/16 - 18 | 6.60 | 6.50 | M4.0×0.75 | 3.45-3.41 | SM3/16-32 | 4.205-4.155 |
| W 3/8 - 16 | 8.00 | 7.90 | M4.5×0.75 | 3.96-3.92 | SM3/16-28 | 4.143-4.093 |
| W 7/16 - 14 | 9.40 | 9.30 | M5.0×0.8 | 4.43-4.38 | SM7/32-32 | 5.003-4.955 |
| W 1/2 - 12 | 10.70 | 10.50 | M5.0×0.9 | 4.36-4.31 | SM15/64-28 | 5.325-5.570 |
| W 9/16 - 12 | 12.30 | 12.00 | M6.0×1.0 | 5.30-5.25 | SM1/4-40 | 5.890-5.735 |
| W 5/8 - 11 | 13.70 | 13.50 | M7.0×1.0 | 6.30-6.25 | SM1/4-28 | 5.721-5.366 |
| W 3/4 - 10 | 16.70 | 16.50 | M8.0×1.0 | 7.28-7.23 | SM9/32-28 | 6.508-6.648 |
| W 7/8 - 9 | 19.50 | 19.30 | M8.0×1.25 | 7.12-7.07 | SM11/32-28 | 8.092-8.432 |
| W1 - 8 | 22.40 | 22.00 | SM3/8-28 | 8.880-8.015 | ||
| W 1-1/8 - 7 | 25.00 | 24.80 | SM7/16-28 | 10.466-10.401 | ||
| W 1 - 1/4 - 7 | 28.30 | 28.00 | SM7/16-16 | 10.037-9.967 | ||
| SM1/2-20 | 11.819-11.749 | |||||
| SM9/26-20 | 13.400-13.425 | |||||
