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＋－米制普通螺纹的优选系列 /mm |
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公 称 直 径 D，d |
螺 距 P |
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第一系列 |
第二系列 |
粗 牙 |
细 牙 |
|
1 |
|
0.25 |
|
|
1.2 |
|
0.25 |
|
|
|
1.4 |
3 |
|
|
1.6 |
|
0.35 |
|
|
|
1.8 |
0.35 |
|
|
2 |
|
0.4 |
|
|
2.5 |
|
0.45 |
|
|
3 |
|
0.5 |
|
|
|
3.5 |
0.6 |
|
|
4 |
|
0.7 |
|
|
5 |
|
0.8 |
|
|
6 |
|
1 |
|
|
|
7 |
1 |
|
|
8 |
|
1.25 |
1 |
|
10 |
|
1.5 |
1.25，1 |
|
12 |
|
1.75 |
1.5，1.25 |
|
|
14 |
2 |
1.5 |
|
16 |
|
2 |
1.5 |
|
|
18 |
2.5 |
2，1.5 |
|
20 |
|
2.5 |
2，1.5 |
|
|
22 |
2.5 |
2，1.5 |
|
24 |
|
3 |
2 |
|
|
27 |
3 |
2 |
|
30 |
|
3.5 |
2 |
|
|
33 |
3.5 |
2 |
|
36 |
|
4 |
3 |
|
|
39 |
4 |
3 |
|
42 |
|
4.5 |
3 |
|
|
45 |
4.5 |
3 |
|
48 |
|
5 |
3 |
|
|
52 |
5 |
4 |
|
56 |
|
5.5 |
4 |
|
|
60 |
5.5 |
4 |
|
64 |
|
6 |
4 |
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注：优先选用第一系列直径。 |
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