公制螺纹
基本直径
内螺纹公差等级
外螺纹公差
大径
中径
小径
H
7H
g
中径公差
小径公差
中径公0,差
小径公差
中径公差
小径公差
M10*1
10
9.35
8.917
0,+0.150
0,+0.236
0,+0.190
0,+0.300
-0.026,-0.138
-0.026,0.206
M12*1
12
11.35
10.917
0,+0.160
0,+0.236
0,+0.200
0,+0.300
-0.026,-0.144
-0.026,0.206
M14*1
14
13.35
122.917
0,+0.160
0,+0.236
0,+0.200
0,+0.300
-0.026,-0.144
-0.026,0.206
M12*1.25
12
11.188
10.647
0,+0.180
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
0,+0.190
0,+0.300
0,+0.236
0,+0.375
-0.032,-0.172
-0.032,-0.268
M14*1.5
14
13.026
12.376
0,+0.190
0,+0.300
0,+0.236
0,+0.375
-0.032,-0.172
-0.032,-0.268
M16*1.5
16
15.026
14.376
0,+0.190
0,+0.300
0,+0.236
0,+0.375
-0.032,-0.172
-0.032,-0.268
M18*1.5
18
17.026
16.376
0,+0.190
0,+0.300
0,+0.236
0,+0.375
-0.032,-0.172
-0.032,-0.268
M20*1.5
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
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
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
0
29.026
28.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M33*1.5
3
2.026
1.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M36*1.5
.026
.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M39*1.5
9
8.026
7.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M42*1.5
2
1.026
0.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M27*2
27
25.701
24.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M30*2
0
28.701
27.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M33*2
3
1.701
0.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M36*2
.701
3.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M39*2
9
7.701
.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M42*2
2
0.701
9.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M45*2
3.701
2.835
0,+0.224
0,+0.375
0,+0.280
0,+0.475
-0.038,-0.208
-0.038,-0.318
M52*2
2
0.701
9.835
0,+0.236
0,+0.375
0,+0.300
0,+0.475
-0.038,-0.218
-0.038,-0.318
M60*2
0
8.701
7.835
0,+0.236
0,+0.375
0,+0.300
0,+0.475
-0.038,-0.218
-0.038,-0.318
M64*2
4
2.701
1.835
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
9.835
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
/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
/4-14NPSM
26.264
26.010
25.077
24.943
24.333
24.638
25.118
25.293
16
1-11.5NPSM
2.842
2.537
1.417
1.270
0.505
0.759
1.460
1.653
20
1.1/4-11.5NPSM
1.605
1.300
0.173
0.020
9.268
9.497
0.218
0.416
24
1.1/2-11.5NPSM
7.676
7.371
.241
.086
.339
.568
.286
.487
2
2-11.5NPSM
9.715
9.411
8.278
8.120
7.379
7.607
8.326
8.532
0
2.1/2-8NPSM
72.161
71.780
70.104
9.916
8.783
9.266
70.160
70.409
8
-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
.102
.703
9.986
04
Z1/4*18
13.616
12.487
11.385
.786
10.206
13.254
06
Z3/8*18
17.055
15.926
14.797
.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
3.228
1.461
29.694
10.160
17.343
2.593
20
Z1.1/4*1.5
1.985
0.218
8.451
10.668
17.953
1.318
24
Z1.1/2*11.5
8.054
.287
4.520
10.668
18.377
7.387
2
Z2*11.5
0.092
8.325
.558
11.074
19.215
9.400
0
Z2.1/2*8
72.699
70.159
7.619
17.323
28.892
71.616
8
Z3*8
88.608
86.068
83.528
19.456
0.480
87.392
5度英锥管螺纹
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
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
0，-0.142
0，-0.284
0，-0.284
0，-0.284
10
G5/8*14
22.911
21.749
20.587
0.142，0
0.541，0
0，-0.142
0，-0.284
0，-0.284
0，-0.284
12
G3/4*14
26.441
25.279
24.117
0.142，0
0.541，0
0，-0.142
0，-0.284
0，-0.284
0，-0.284
16
G1*11
3.249
1.770
0.291
0.180，0
0.640，0
0，-0.180
0，-0.360
0，-0.360
0，-0.360
20
G1.1/4*11
1.910
0.431
8.952
0.180，0
0.640，0
0，-0.180
0，-0.360
0，-0.360
0，-0.360
24
G1.1/2*11
7.803
.324
4.845
0.180，0
0.640，0
0，-0.180
0，-0.360
0，-0.360
0，-0.360
2
G2*11
9.614
8.135
.656
0.180，0
0.640，0
0，-0.180
0，-0.360
0，-0.360
0，-0.360
0
G2.1/2*11
75.184
73.705
72.226
0.217，0
0.640，0
0，-0.217
0，-0.434
0，-0.434
0，-0.434
8
G3*11
87.884
86.405
84.926
0.217，0
0.640，0
0，-0.217
0，-0.434
0，-0.434
0，-0.434
5度英锥管螺纹
标号
螺纹代号
基面上的直径
基准长度
有效螺纹长度
圆锥内螺纹基面轴向位移的极限偏差
端面大径
大径
中径
小径
基本
最大
最小
基本
最大
最小
02
R1/8*28
9.728
9.147
8.566
.9
.1
.5
7.4
.6
1.1
9.478
04
R1/4*19
13.157
12.301
11.445
7.3
.7
9.7
11
8.4
1.7
12.782
06
R3/8*19
16.662
15.806
14.950
.4
7.7
.1
10.1
11.4
8.8
1.7
16.262
08
R1/2*14
20.955
19.793
18.631
8.2
10
.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
3.249
1.770
0.291
10.4
12.7
8.1
16.8
19.1
14.5
2.9
2.599
20
R1.1/4*11
1.910
0.431
8.952
12.7
15
10.4
19.1
21.4
16.8
2.9
1.116
24
R1.1/2*11
7.803
.324
4.845
12.7
15
10.4
19.1
21.4
16.8
2.9
7.009
2
R2*11
9.614
8.135
.656
15.9
18.2
13.6
23.4
25.7
21.1
2.9
8.620
0
R2.1/2*11
75.184
73.705
72.226
17.5
21
14
26.7
0.2
23.2
.5
74.090
8
R3*11
87.884
86.405
84.926
20.6
24.1
17.1
29.8
3.3
26.3
.5
86.597
美制螺纹
标号
螺纹代号
外螺纹
内螺纹
公差等级2A
公差等级2B
大径
中径
小径
最大
小径
中径
大径
最小
最大
最小
最大
最小
最小
最大
最小
最大
JIC螺纹
02
/16×24UNF
7.910
7.727
7.221
7.127
.650
.782
7.036
7.249
7.371
7.938
03
/8*24UNF
9.497
9.314
8.809
8.712
8.237
8.382
8.636
8.837
8.961
9.525
04
7/16*20UNF
11.079
10.874
10.254
10.147
9.568
9.728
10.033
10.287
10.424
11.113
05
1/2*20UNF
12.667
12.461
11.841
11.732
11.156
11.328
11.608
11.875
12.017
12.7
06
9/16*18UNF
14.252
14.031
13.335
13.221
12.573
12.751
13.081
13.371
13.52
14.288
08
/4*16UNF
19.012
18.773
17.981
17.854
17.12
17.323
17.678
18.019
18.184
19.05
10
7/8*14UNF
22.184
21.923
21.006
20.869
20.025
20.269
20.676
21.046
21.224
22.225
12
1.1/16*12UNF
26.944
26.655
25.57
25.425
24.425
24.689
25.146
25.613
25.801
26.988
16
1.5/16*12UNF
3.294
3.005
1.92
1.773
0.775
1.039
1.496
1.963
2.154
3.338
20
1.5/8*12UNF
1.229
0.94
9.855
9.705
8.71
8.989
9.446
9.901
0.094
1.275
24
1.7/8*12UNF
7.579
7.29
.205
.053
.06
.339
.796
.251
.449
7.625
2
2.1/2*12UNF
3.452
3.162
2.078
1.92
0.932
1.214
1.671
2.126
2.332
3.5
0
812UNF
76.157
75.862
74.778
74.618
73.632
73.914
74.371
74.826
75.034
76.2
18HK
1.1/2*10UNF
8.052
7.724
.401
.238
.029
.357
.890
.449
.660
8.100
ORFS螺纹
04
9/16*18UNF
14.252
14.031
13.335
13.221
12.573
12.751
13.081
13.371
13.52
14.288
06
11/16*16UNF
17.427
17.188
16.396
16.274
15.535
15.748
16.104
16.431
16.589
17.463
08
13/16*16UNF
20.599
20.361
19.568
19.444
18.707
18.923
19.279
19.606
19.766
20.638
10
1*14UNSF
25.357
25.095
24.178
24.036
23.195
23.444
23.825
24.221
24.407
25.4
12
1.3/16*12UN
0.119
29.83
28.754
28.598
27.6
27.864
28.321
28.788
28.979
0.163
16
1.7/16*12UN
.467
.177
.093
.943
3.947
.214
.671
.138
.331
.513
20
1.11/16*12UN
2.817
2.527
1.443
1.29
0.297
0.564
1.021
1.488
1.686
2.863
24
2*12UN
0.754
0.465
9.38
9.25
8.235
8.514
8.971
9.426
9.627
0.8
SAE螺纹
06
/8×18UNF
15.839
15.618
14.923
14.803
14.161
14.351
14.681
14.958
15.11
15.875
12
1.1/16*14UNF
26.947
26.683
25.743
25.608
24.74
24.968
25.375
25.783
25.961
26.987
其他美制螺纹
9/16*16UN
14.252
14.013
13.221
13.101
12.36
12.573
12.929
13.256
13.411
14.288
7/8*12UN
22.182
21.892
20.808
20.668
19.662
19.939
20.396
20.851
21.034
22.225
2.1/4*12UN
7.104
.815
5.73
5.575
4.585
4.864
5.321
5.776
5.976
7.15
可拆式芯子与套筒连接螺纹
软管编号
螺纹代号
外螺纹
内螺纹
公差等级2B
大径
中径
小径
小径
中径
大径
最大
最小
最大
最小
最小
最大
最小
最大
R5-04
9/32*32
7.120
.967
.604
.523
.175
.294
.472
.629
.736
7.145
R5-05
/127*28
9.197
9.032
8.608
8.516
8.115
8.234
8.463
8.636
8.753
9.225
R5-06
107/254*28
10.685
10.520
10.095
10.004
9.603
9.735
9.938
10.123
10.240
10.713
R5-08
9/16*24
14.257
14.074
13.569
13.470
12.997
13.132
13.386
13.599
13.729
14.288
R5-10
11/16*24
17.432
17.249
16.744
16.642
16.172
16.307
16.561
16.774
16.906
17.463
R5-12
13/16*20
20.599
20.399
19.779
19.667
19.347
19.253
19.558
19.812
19.982
20.638
R5-16
1.1/16*18
26.952
26.731
26.035
25.916
25.273
25.451
25.781
26.071
26.228
26.988
R5-20
1.5/16*18
3.299
3.078
2.382
2.258
1.620
1.801
2.131
2.421
2.581
3.338
R5-24
1.9/16*18
9.649
9.428
8.732
8.605
7.970
8.151
8.481
8.771
8.936
9.688
R5-32
2*18
0.762
0.541
9.845
9.715
9.083
9.276
9.606
9.883
0.053
0.800
2A-04
7/16*20
11.079
10.874
10.254
10.147
9.568
9.728
10.033
10.287
10.424
11.113
2A-06
9/16*18
14.252
14.031
13.335
13.221
12.573
12.751
13.081
13.371
13.520
14.288
2A-08
/8*18
15.839
15.618
14.923
14.803
14.161
14.351
14.681
14.958
15.110
15.875
2A-10
/4*18
19.014
18.793
18.098
17.981
17.336
17.526
17.856
18.133
18.285
19.050
2A-12
7/8*18
22.189
21.968
21.273
21.156
20.511
20.701
21.031
21.308
21.460
22.225
2A-16
1.3/16*16
0.124
29.870
29.093
28.964
28.232
28.448
28.804
29.131
29.299
0.163
2A-20
1.9/16*18
9.649
9.428
8.732
8.605
7.970
8.151
8.481
8.771
8.936
9.688
新西兰B09内螺纹
标号
你螺纹代号
大径MIN
中径MIN
中径MAX
小径MIN
小径MAX
B-09
0.860in*14
21.844
20.683
20.841
19.522
NPTF+密封管螺纹
标号
螺纹代号
外螺纹小端中径
外螺纹大端中径
外螺纹小端大径最小
外螺纹小端大径最大
外螺纹全牙长度
内螺纹大端中径
内螺纹小端中径
内螺纹大端小径最小
内螺纹大端小径最大
内螺纹全牙长度
2
1/8-27NPTF
9.233
9.652
9.871
9.960
.703
9.489
9.058
8.763
8.851
.924
1/4-18NPTF
12.126
12.764
13.128
13.215
10.206
12.487
11.862
11.398
11.486
10.020
/8-18NPTF
15.545
16.193
16.547
16.634
10.358
15.926
15.281
14.837
14.924
10.330
8
1/2-14NPTF
19.264
20.111
20.616
20.703
13.556
19.772
18.926
18.333
18.420
13.571
12
/4-14NPTF
24.579
25.445
25.931
26.018
13.861
25.117
24.239
23.678
23.768
14.054
16
1-11.5NPTF
0.826
1.910
2.474
2.562
17.343
1.461
0.411
29.725
29.813
16.787
20
1.1/4-11.5NPTF
9.551
0.673
1.199
1.287
17.953
0.218
9.136
8.482
8.570
17.295
24
1.1/2-11.5NPTF
.621
.769
7.269
7.357
18.377
.287
.207
4.551
4.640
17.295
2
2-11.5NPTF
7.633
8.834
9.281
9.369
19.215
8.325
7.219
.589
.677
17.701
0
2.1/2-8NPTF
9.076
70.882
71.476
71.559
28.893
70.159
8.481
7.676
7.759
26.848
8
-8NPTF
84.852
86.757
87.252
87.335
0.480
86.068
84.257
83.585
83.668
28.981
备注：1.表中外螺纹的完整螺纹长度包括不超过一个螺距长度的倒角
2.表中内螺纹的完整螺纹长度不包括在中径线和倒角交线外的锥口孔。即完整螺纹长度的等于完整内螺纹加一个螺距。
