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| 外径 | 底壁厚 | 齿高 | |||
| O.D | Bottom Wall Tickness Tw | Fin Groove Depth Hf | |||
| Inch | mm | Inch | mm | Inch | mm |
| 0.1575 | 4 | 0.008 - 0.012 | 0.20 - 0.30 | 0.004 - 0.006 | 0.10 - 0.15 |
| 0.1875 | 4.76 | 0.008 - 0.014 | 0.20 - 0.35 | 0.004 - 0.006 | 0.10 - 0.15 |
| 0.197 | 5 | 0.008 - 0.014 | 0.20 - 0.35 | 0.004 - 0.006 | 0.10 - 0.15 |
| 0.2363 | 6 | 0.008 - 0.014 | 0.20 - 0.35 | 0.004 - 0.008 | 0.10 - 0.20 |
| 0.25 | 6.35 | 0.008 - 0.014 | 0.20 - 0.35 | 0.004 - 0.008 | 0.10 - 0.20 |
| 0.275 | 7 | 0.010 -0.016 | 0.20 - 0.41 | 0.004 - 0.010 | 0.10 - 0.25 |
| 0.3125 | 7.94 | 0.010 -0.016 | 0.20 - 0.41 | 0.004 - 0.010 | 0.10 - 0.25 |
| 0.375 | 9.52 | 0.010 -0.016 | 0.20 - 0.46 | 0.004 - 0.012 | 0.10 - 0.30 |
◆ 齿顶角: 30°-60° ◆ Apex angle(α) , 30°-60°
◆ 螺旋角:15°-30° ◆ Helix angle deg(β),15°-30°
◆ 螺纹条数:40-70 ◆ Number of grooves(Number),40-70