0,+0.265
0,+0.224
0,+0.335
-0.028,-0.160
-0.028,-0.240
M14*1.25
14
13.188
12.647
0,+0.180
0,+0.265
0,+0.224
0,+0.335
-0.028,-0.160
-0.028,-0.240
M12*1.5
12
11.026
10.376
M33*1.5
33
32.026
31.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M36&1.5
36
35.026
34.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
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
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
0，-0.284
0，-0.284
0，-0.284
16
G1*11
33.249
31.770
30.291
0.180，0
0.640，0
0，-0.180
0，-0.360
0，-0.360
0，-0.360
20
G1.1/4*11
41.910
40.431
38.952
0.180，0
0.640，0
0，-0.180
0，-0.360
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
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
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
标号
螺纹代号
基本直径
内螺纹
外螺纹
大径
中径
小径
中径公差
小径公差
公差等级
A
B
中径公差
大径公差
中径公差
大径公差
02
G1/8*28
9.728
9.147
8.566
0.170，0
0.282，0
0，-0.170
0，-0.214
0，-0.214
0，-0.214
04
G1/4*19
13.157
12.301
11.445
0.125，0
M24*1.5
14
23.026
22.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M26*1.5
26
25.026
24.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
20
19.026
18.376
0,+0.190
0,+0.300
0,+0.236
0,+0.375
-0.032,-0.172
-0.032,-0.268
M22*1.5
22
21.026
20.376
0,+0.190
0,+0.300
0,+0.236
0,+0.375
-0.032,-0.172
-0.032,-0.268
9.7
11
8.4
1.7
12.782
06
R3/8*19
16.662
15.806
14.950
6.4
7.7
5.1
10.1
11.4
8.8
1.7
16.262
08
R1/2*14
20.955
19.793
18.631
8.2
10
6.4
13.2
15
11.4
2.3
20.443
12
R3/4*14
26.441
25.279
24.117
9.5
11.3
7.7
14.5
16.3
12.7
2.3
25.847
16
R1*11
33.249
31.770
30.291
10.4
12.7
8.1
16.8
19.1
14.5
2.9
M39*2
39
37.701
36.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208源自-0.038,-0.318M42*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
0.445，0
0.-0.125
0，-0.250
0，-0.250
0，-0.250
06
G3/8*19
16.662
15.806
14.950
0.125，0
0.445，0
0，-0.125
0，-0.250
0，-0.250
0，-0.250
08
G1/2*14
20.955
19.793
18.631
0.142，0
0.541，0
M33*2
33
31.701
30.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M36*2
36
34.701
33.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M27*1.5
27
26.026
25.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M30*1.5
30
29.026
28.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182