常用螺纹尺寸与公差汇总表 g1/4螺纹是什么标准( 二 )


-0.038,-0.208
-0.038,-0.318
M42*2
42
40.701
39.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M45*2
45
43.701
42.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M52*2
52
50.701
49.835
0,+0.236
0,+0.375
0,+0.300
0,+0.475
-0.038,-0.218
-0.038,-0.318
M60*2
60
58.701
57.835
0,+0.236
0,+0.375
0,+0.300
0,+0.475
-0.038,-0.218
-0.038,-0.318
M64*2
64
62.701
61.835
0,+0.236
0,+0.375
0,+0.300
0,+0.475
-0.038,-0.218
-0.038,-0.318
M72*2
72
70.701
69.835
0,+0.236
0,+0.375
0,+0.300
0,+0.475
-0.038,-0.218
-0.038,-0.318
美制NPSM螺纹(美国标准ANSI B1.20.1机械连接用直管螺纹60度)
标号
螺纹代号
外螺纹(2A级)
内螺纹(2B级)
大径
中径
小径
中径
最大值
最小值
最大值
最小值
最小值
最大值
最小值
最大值
02
1/8-27NPSM
10.084
9.906
9.462
9.370
9.093
9.246
9.489
9.609
04
1/4-18NPSM
13.360
13.132
12.454
12.342
11.887
12.217
12.487
12.634
06
3/8-18NPSM
16.815
16.586
15.890
15.776
15.316
15.545
15.926
16.076
08
1/2-14NPSM
20.904
20.650
19.733
19.604
18.974
19.279
19.771
19.942
12
3/4-14NPSM
26.264
26.010
25.077
24.943
24.333
24.638
25.118
25.293
16
1-11.5NPSM
32.842
32.537
31.417
31.270
30.505
30.759
31.460
31.653
20
1.1/4-11.5NPSM
41.605
41.300
40.173
40.020
39.268
39.497
40.218
40.416
24
1.1/2-11.5NPSM
47.676
47.371
46.241
46.086
45.339
45.568
46.286
46.487
32
2-11.5NPSM
59.715
59.411
58.278
58.120
57.379
57.607
58.326
58.532
40
2.1/2-8NPSM
72.161
71.780
70.104
69.916
68.783
69.266
70.160
70.409
48
3-8NPSM
88.062
87.681
86.009
85.816
84.684
85.166
86.068
86.319
NPT布锥管螺纹
标号
螺纹代号
基面上的直径
螺纹长度
端面大径
大径
中径
小径
管端至基面长
有效长度
02
Z1/8*27
10.242
9.489
8.736
4.102
6.703
9.986
04
Z1/4*18
13.616
12.487
11.385
5.786
10.206
13.254
06
Z3/8*18
17.055
15.926
14.797
6.096
10.358
16.674
08
Z1/2*14
21.223
19.772
18.321
8.128
13.556
20.715
12
Z3/4*14
26.568
25.117
23.666
8.611
13.861
26.030
16
Z1*11.5
33.228
31.461
29.694
10.160
17.343
32.593
20
Z1.1/4*1.5
41.985
40.218
38.451
10.668
17.953
41.318
24
Z1.1/2*11.5
48.054
46.287
44.520
10.668
18.377
47.387

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