絲攻加工下孔徑表 |
梅華 |
選PF-G 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 |
6.7 |
6.843 |
6.561 |
1/8x28 |
8.7 |
8.848 |
8.566 |
1/4x19 |
11.7 |
11.890 |
11.445 |
3/8x19 |
15.2 |
15.395 |
14.950 |
1/2x14 |
19 |
19.172 |
18.631 |
5/8x14 |
21 |
21.128 |
20.589 |
3/4x14 |
24.5 |
24.658 |
24.117 |
7/8x14 |
28.2 |
28.418 |
27.877 |
1x11 |
30.6 |
30.931 |
30.291 |
1.1/8x11 |
35.2 |
35.579 |
34.939 |
1.1/4x11 |
39.2 |
39.592 |
38.952 |
1.1/2x11 |
45 |
45.485 |
44.845 |
1.3/4x11 |
51 |
51.428 |
50.788 |
2x11 |
57 |
57.296 |
56.656 |