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普通螺纹标准规格表
普通螺纹基本尺寸（
mm
）
公称直
径
1
1.2
1.4
1.6
2
2.5
3
3.5
4
4.5
5
6
8
8
10
10
10
12
12
12
14
14
16
16
18
20
20
20
螺距
p
0.25
0.25
0.3
0.35
0.4
0.45
0.5
0.6
0.7
0.75
0.8
1
1
1.25
1
1.25
1.5
1.25
1.5
1.75
1.5
2
1.5
2
2.5
1.5
2
2.5
中径
0.838
1.038
1.205
1.373
1.740
2.208
2.675
3.110
3.545
4.013
4.480
5.350
7.350
7.188
9.350
9.188
9.026
11.188
11.026
10.863
13.026
12.701
15.026
14.701
16.376
19.026
18.701
18.376
小径
0.729
0.929
1.075
1.221
1.567
2.013
2.459
2.850
3.242
3.688
4.134
4.917
6.917
6.647
8.917
8.647
8.376
10.647
10.376
10.106
12.376
11.835
14.376
13.835
15.294
18.376
17.835
17.294
普通螺
纹基本尺寸（
mm
）
公称直
径
22
22
24
24
27
27
30
30
33
33
36
36
39
39
42
42
45
45
48
48
52
52
58
58
60
60
64
64
螺距
p
1.5
2.5
2
3
2
3
2
3.5
2
3.5
3
4
3
4
3
4.5
3
4.5
3
5
4
5
4
5
4
5.5
4
6
中径
21.026
20.376
22.701
22.051
25.701
25.051
28.701
27.727
31.701
30.727
34.051
33.042
37.051
36.042
40.051
39.077
43.051
42.077
46.051
44.752
49.402
48.752
54.402
54.752
57.402
56.428
61.402
60.103
小径
20.376
19.294
21.835
20.752
24.835
23.752
27.835
26.211
30.835
29.211
32.752
31.670
35.752
34.670
38.752
37.129
41.752
40.129
44.752
42.587
47.670
46.587
52.670
52.587
55.670
54.046
59.670
57.505