螺丝攻牙钻孔径和滚造径对照表 |
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点击这返回总目录 |
英制管螺纹 |
英制管螺纹 |
美制管螺纹 |
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规格 |
标准径 |
钻孔径 |
规格 |
标准径 |
有交牙部之长度(最小)中之毋螺牙内径 |
标准长度(最小)中之毋螺牙内径 |
规格 |
钻孔径 |
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最大 |
最小 |
使用纹刀时 |
不用纹刀时 |
NPT |
NPS |
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使用绞刀时 |
不用绞刀时 |
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PS 1/16 - 28 |
6.50 |
6.632 |
6.490 |
PT 1/16 - 28 |
6.10 |
6.20 |
6.244 |
6.384 |
1/16 - 27 |
6.10 |
6.25 |
6.35 |
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PS 1/8 - 28 |
8.50 |
8.637 |
8.495 |
PT 1/8 - 28 |
8.10 |
8.20 |
8.249 |
8.388 |
1/8 - 27 |
8.33 |
8.43 |
8.74 |
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PS 1/4 - 19 |
11.40 |
11.549 |
11.341 |
PT 1/4 - 19 |
10.70 |
11.00 |
10.962 |
11.174 |
1/4 - 18 |
10.72 |
11.13 |
11.13 |
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PS 3/8 - 19 |
15.00 |
15.054 |
14.846 |
PT 3/8 - 19 |
14.20 |
14.50 |
14.448 |
14.658 |
3/8 - 18 |
14.27 |
14.27 |
14.68 |
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PS 1/2 - 14 |
18.50 |
18.773 |
18.489 |
PT 1/2 - 14 |
17.60 |
18.00 |
17.979 |
18.263 |
1/2 - 14 |
17.48 |
17.86 |
18.26 |
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PS 3/4 -14 |
24.00 |
24.259 |
23.975 |
PT 3/4 - 14 |
23.00 |
23.50 |
23.378 |
23.663 |
3/4 - 14 |
22.63 |
23.01 |
23.42 |
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PS 1 - 11 |
30.20 |
30.471 |
30.111 |
PT 1- 11 |
29.00 |
29.50 |
29.459 |
29.822 |
1 - 11-1/2 |
28.58 |
28.98 |
29.36 |
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PS 1-1/4 - 11 |
38.80 |
39.132 |
38.772 |
PT 1-1/4 - 11 |
37.50 |
38.00 |
37.976 |
38.339 |
1-1/4-11-1/2 |
37.31 |
37.69 |
38.10 |
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PS 1-1/2 - 11 |
44.80 |
45.025 |
44.665 |
PT 1-1/2 - 11 |
43.40 |
44.00 |
43.869 |
44.232 |
1-1/2-11-1/2 |
43.66 |
44.04 |
44.45 |
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PS 2 - 11 |
56.50 |
56.836 |
56.476 |
PT 2 - 11 |
54.90 |
55.50 |
55.412 |
55.844 |
2 - 11 - 1/2 |
55.58 |
55.96 |
56.36 |
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