絲攻加工下孔徑選用表 |
梅華 |
PS-Rp 英制管用螺紋 |
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平行內螺紋 |
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螺紋尺寸 |
建議孔徑 |
最大尺寸 |
最小尺寸 |
1/16x28 |
6.5 |
6.632 |
6.49 |
1/8x28 |
8.5 |
8.637 |
8.495 |
1/4x19 |
11.4 |
11.549 |
11.341 |
3/8x19 |
14.9 |
15.054 |
14.846 |
1/2x14 |
18.6 |
18.773 |
18.489 |
3/4x14 |
24 |
24.259 |
23.975 |
1x11 |
30.2 |
30.472 |
30.11 |
1.1/4x11 |
38.8 |
39.133 |
38.771 |
1.1/2x11 |
44.7 |
45.026 |
44.664 |
2x11 |
56.5 |
56.837 |
56.475 |