M64*2
M60*2
M52*2
M45*2
M42*2
M39*2
M36*2
M33*2
M30*2
M27*2
M14*1
M12*1
M10*1
M42*1.5
M39*1.5
M33*1.5
M30*1.5
M27*1.5
M26*1.5
M24*1.5
M22*1.5
M20*1.5
M18*1.5
M16*1.5
M14*1.5
M12*1.5
M36&1.5
M14*1.25
M12*1.25
标号
1
72
9.35中径
64
60
52
45
42
39
36
33
30
27
42
39
36
33
30
27
26
14
22
20
18
16
14
12
14
12
14
12
10
大径
螺纹代号
13.3511.3543.70140.70137.70134.70131.70128.70125.70141.02638.02635.02632.02629.02626.02625.02623.02621.02619.02617.02615.02613.02611.02613.18811.188
小径8.91742.83539.83536.83533.83530.83527.83524.83540.37637.37634.37631.37628.37625.37624.37622.37620.37618.37616.37614.37612.37610.37612.64710.64710.917122.917
6H中径公差0,+0.2240,+0.2240,+0.2240,+0.2240,+0.2240,+0.2240,+0.2240,+0.2000,+0.2000,+0.2000,+0.2000,+0.2000,+0.2000,+0.2000,+0.2000,+0.1900,+0.1900,+0.1900,+0.1900,+0.1900,+0.1900,+0.1800,+0.1800,+0.1600,+0.1600,+0.150
小径公差0,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3000,+0.3000,+0.3000,+0.3000,+0.3000,+0.3000,+0.3000,+0.3000,+0.3000,+0.3000,+0.3000,+0.3000,+0.3000,+0.3000,+0.2650,+0.2650,+0.2360,+0.2360,+0.236
基本直径
70.701
62.701
58.701
50.701
69.835
61.835
57.835
49.835
美制NPSM螺纹（美国标准ANSI B1.20.1机械连接用直管螺纹60
最大值
0,+0.2800,+0.2800,+0.2800,+0.2800,+0.2800,+0.2800,+0.2800,+0.2500,+0.2500,+0.2500,+0.2500,+0.2500,+0.2500,+0.2500,+0.2500,+0.2360,+0.2360,+0.2360,+0.2360,+0.2360,+0.2360,+0.2240,+0.2240,+0.2000,+0.200
0,+0.4750,+0.4750,+0.4750,+0.4750,+0.4750,+0.4750,+0.4750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3750,+0.3350,+0.3350,+0.3000,+0.300
-0.038,-0.208-0.038,-0.208-0.038,-0.208-0.038,-0.208-0.038,-0.208-0.038,-0.208-0.038,-0.208-0.032,-0.182-0.032,-0.182-0.032,-0.182-0.032,-0.182-0.032,-0.182-0.032,-0.182-0.032,-0.182-0.032,-0.182-0.032,-0.172-0.032,-0.172-0.032,-0.172-0.032,-0.172-0.032,-0.172-0.032,-0.172-0.028,-0.160-0.028,-0.160-0.026,-0.144-0.026,-0.144
-0.026,0.206-0.026,0.206-0.038,-0.318-0.038,-0.318-0.038,-0.318-0.038,-0.318-0.038,-0.318-0.038,-0.318-0.038,-0.318-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.032,-0.268-0.028,-0.240-0.028,-0.240
大径
0,+0.236
0,+0.236
0,+0.236
0,+0.236
最小值
0,+0.375
0,+0.375
0,+0.375
0,+0.375
外螺纹（2A级）
公制螺纹
内螺纹公差等级
最大值
度）
7H
中径
中径公0,差
0,+0.300
0,+0.300
0,+0.300
0,+0.300
0,+0.190
最小值
0,+0.475
0,+0.475
0,+0.475
0,+0.475
0,+0.300
小径公差
最小值
小径
6G
中径公差
-0.038,-0.218
-0.038,-0.218
-0.038,-0.218
-0.038,-0.218
-0.026,-0.138
最大值
内螺纹（2B级）
外螺纹公差
最小值
小径公差
-0.026,0.206
-0.038,-0.318
-0.038,-0.318
-0.038,-0.318
-0.038,-0.318
中径
最大值
标号
24
4840322420161208060402标号4840322420161208060402
20
16
12
10
08
06
04
02
G1*11
G3/4*14
G5/8*14
G1/2*14
G3/8*19
G1/4*19
G1/8*28
螺纹代号
G1.1/2*1
1
大径3-8NPSMZ3/4*14Z1/2*14Z3/8*18Z1/4*18Z1/8*27Z2*11.5Z1*11.53/4-14NPSM1/2-14NPSM3/8-18NPSM1/4-18NPSM1/8-27NPSM2-11.5NPSM1-11.5NPSM2.1/2-8NPSMZ1.1/4*1.51.1/2-11.5NPSM1.1/4-11.5NPSMZ1.1/2*11.5Z2.1/2*8Z3*8
中径
螺纹代号 基本直径
16.81588.06272.16159.71547.67641.60532.84226.26420.90413.36010.084
大径88.60872.69960.09248.05441.98533.22826.56821.22317.05513.61610.242小径
9.90687.68171.78059.41147.37141.30032.53726.01020.65016.58613.132
中径基面上的直径中径公差
9.48986.06870.15958.32546.287
9.46286.00970.10458.27846.24140.17331.41725.07719.73315.89012.454内螺纹
G1.1/4*1
1
2
9.728
47.803
40.21831.46125.11719.77215.92612.487
41.910
33.249
26.441
22.911
20.955
16.662
13.157
9.147
46.324
40.431
31.770
25.279
21.749
19.793
15.806
12.301
8.566
44.845
38.952
30.291
24.117
20.587
18.631
14.950
11.445
0.170，0
55度英锥管螺纹
0.180，0
0.180，0
0.180，0
0.142，0
0.142，0
0.142，0
0.125，0
0.125，0
NPT布锥管螺纹
小径公差
0.640，0
8.73683.52867.61956.55844.52038.45129.69423.66618.32114.79711.385
中径公差
8.6118.1286.0965.7864.10219.45617.32311.07410.66810.66810.160A
大径公差
外螺纹公差等级
6.70330.48028.89219.21518.37717.95317.34313.86113.55610.35810.206中径公差
B9.98687.39271.61659.40047.38741.31832.59326.03020.71516.67413.254大径公差
0.640，0
0.640，0
0.541，0
0.541，0
0.541，0
0.445，0
0.445，0
0.282，0
85.816
69.916
58.120
46.086
40.020
31.270
24.943
19.604
15.776
12.342
小径
9.370
0.-0.125
0，-0.180
0，-0.180
0，-0.180
0，-0.142
0，-0.142
0，-0.142
0，-0.125
0，-0.170
9.093
84.684
68.783
57.379
45.339
39.268
30.505
24.333
18.974
15.316
11.887
管端至基面长
9.246
85.166
69.266
57.607
45.568
39.497
30.759
24.638
19.279
15.545
12.217
0，-0.360
0，-0.360
0，-0.360
0，-0.284
0，-0.284
0，-0.284
0，-0.250
0，-0.250
0，-0.214
螺纹长度
有效长度
9.489
86.068
70.160
58.326
46.286
40.218
31.460
25.118
19.771
15.926
12.487
0，-0.360
0，-0.360
0，-0.360
0，-0.284
0，-0.284
0，-0.284
0，-0.250
0，-0.250
0，-0.214
9.609
86.319
70.409
58.532
46.487
40.416
31.653
25.293
19.942
16.076
12.634
端面大径
0，-0.360
0，-0.360
0，-0.360
0，-0.284
0，-0.284
0，-0.284
0，-0.250
0，-0.250
0，-0.214
48
40
32
48
40
32
24
20
16
12
08
06
04
02
标号
标号
32
G3*11G2*11G2.1/2*1
1R3/4*14R1/2*14R3/8*19R1/4*19R1/8*28螺纹代号R2.1/2*1
1R1.1/2*1
1R1.1/4*1
1R3*11R2*11R1*11螺纹代号
大径87.88475.18459.6149.72887.88475.18459.61447.80341.91033.24926.44120.95516.66213.157
最大7.910
中径9.147基面上的直径
86.40573.70558.13546.32440.43131.77025.27919.79315.80612.30186.40573.70558.135大径
最小7.727
小径8.56684.92672.22656.65644.84538.95230.29124.11718.63114.95011.44584.92672.22656.656
最大7.221
64外螺纹
9.58.26.4基本20.617.515.912.712.710.4公差等级2A
0.217，00.217，00.180，0中径
7.77.34.9最小24.118.212.711.37.127最大基准长度
24
20
16
12
10
08
06
05
04
03
02
9/16*18UNF
7/16*20UNF
7/8*14UNF
3/4*16UNF
1/2*20UNF
5/16×24UNF3/8*24UNF
1.5/16*12UNF
1.1/16*12UNF
2.1/2*12UNF
1.7/8*12UNF
1.5/8*12UNF
3
9.497
63.452
47.579
41.229
33.294
26.944
22.184
19.012
14.252
12.667
11.079
47.29
40.94
9.314
63.162
33.005
26.655
21.923
18.773
14.031
12.461
10.874
31.92
25.57
8.809
62.078
46.205
39.855
21.006
17.981
21151510
13.335
11.841
10.254
美制螺纹
46.053JIC螺纹
8.17.76.41417.113.610.410.4小径
最大6.650
29.826.723.419.119.116.814.513.2最小6.782
1533.330.225.721.421.419.116.3小径
最大7.03626.323.221.116.816.814.512.711.4
最小7.2493.53.52.92.92.92.92.32.3内螺纹公差等级2B
中径
最大7.371
86.59774.09058.62047.00941.11632.59925.84720.443
大径最小7.938
39.705
31.773
25.425
20.869
17.854
13.221
11.732
10.147
55度英锥管螺纹
61.92
8.712
0.640，0
0.640，0
0.640，0
最小
5.1
4.7
3.1
45.06
38.71
17.12
9.568
8.237
60.932
30.775
24.425
20.025
12.573
11.156
9.7
6.5
基本
10.1
9.728
8.382
0，-0.217
0，-0.217
0，-0.180
有效螺纹长度
61.214
45.339
38.989
31.039
24.689
20.269
17.323
12.751
11.328
7.411
8.88.45.6
最大
11.4
8.636
最小
61.671
45.796
39.446
31.496
20.676
17.678
13.081
11.608
10.033
25.146
0，-0.434
0，-0.434
0，-0.360
8.837
圆锥内螺纹基面轴向位移的极限偏
差
62.126
46.251
39.901
31.963
25.613
21.046
18.019
13.371
11.875
10.287
1.7
1.7
1.1
0，-0.434
0，-0.434
0，-0.360
13.52
8.961
62.332
46.449
40.094
32.154
25.801
21.224
18.184
12.017
10.424
9.478
端面大径
16.262
12.782
0，-0.434
0，-0.434
0，-0.360
19.05
9.525
47.625
41.275
33.338
26.988
22.225
14.288
11.113
63.5
12.7
18HK
12
06
24
20
16
12
10
08
06
04
40
R5-32
R5-24
R5-20
R5-16
R5-12
R5-10
R5-08
R5-06
R5-05
R5-04
软管编号
2A-20
2A-16
2A-12
2A-10
2A-08
2A-06
2A-04
2*18
2*12UN
3812UNF
7/8*12UN
1*14UNSF
螺纹代号
13/16*20
11/16*24
9/16*18
7/16*20
9/16*24
9/32*32
7/8*18
3/4*18
5/8*18
9/16*16UN
9/16*18UNF
2.1/4*12UN
46/127*28
1.1/2*10UNF
13/16*16UNF
11/16*16UNF
1.7/16*12UN
1.3/16*12UN
1.11/16*12UN
5/8×18UNF1.1/16*14UNF
107/254*28
1.9/16*18
1.3/16*16
1.9/16*18
1.5/16*18
1.1/16*18
4
最大
9.197
7.120
39.64957.10422.18214.25226.94715.83950.75442.81736.46730.11925.35720.59917.427
大径
最小9.0326.96729.8333.07826.73120.39917.24914.07410.52056.81521.89214.01326.68315.61850.46542.52736.17725.09520.36117.188
最大8.6086.60455.7349.38外螺纹 25.74332.38226.03519.77916.74413.56910.09520.80813.22114.92341.44335.09328.75424.17819.56816.396
中径
最小8.5166.52349.2541.29其他美制螺纹32.25825.91619.66716.64213.47010.00455.57520.66813.10125.60814.80334.94328.59824.03619.44416.274SAE螺纹
30.124
小径27.69.6038.1156.17512.3624.7431.62025.27319.34716.17212.99754.58519.66214.16148.23540.29733.94723.19518.70715.535
22.189
19.014
15.839
14.252
11.079
50.762
39.649
33.299
26.952
20.599
17.432
14.257
10.685
14.252
38.052
76.157
39.428
29.870
21.968
18.793
15.618
14.031
10.874
50.541
39.428
14.031
37.724
75.862
38.732
最小9.7358.2346.29431.80125.45119.25316.30713.13254.86419.93912.57324.96814.35148.514
小径
最大9.9388.4636.47232.13125.78119.55816.56113.38655.32120.39612.92925.37514.68148.971
最小8.6366.629内螺纹公差等级2B32.42126.07119.81216.77413.59910.12355.77620.85113.25625.78314.95849.426
中径
最大8.7536.73615.1132.58126.22819.98216.90613.72910.24055.97621.03413.41125.96149.627
50.8大径9.2257.14557.1533.33826.98820.63817.46314.28810.71322.22514.28826.98715.875
29.093
21.273
18.098
14.923
13.335
10.254
49.845
38.732
13.335
36.401
74.778
38.605
28.964
21.156
17.981
14.803
13.221
10.147
49.715
38.605
13.221
36.238ORFS螺纹
74.618
9.568
37.970
28.232
20.511
17.336
14.161
12.573
49.083
37.970
12.573
35.029
73.632
可拆式芯子与套筒连接螺纹
新西兰B09内螺纹
9.728
38.151
28.448
20.701
17.526
14.351
12.751
49.276
38.151
40.564
34.214
27.864
23.444
18.923
15.748
12.751
35.357
73.914
38.481
28.804
21.031
17.856
14.681
13.081
10.033
49.606
38.481
41.021
34.671
28.321
23.825
19.279
16.104
13.081
35.890
74.371
38.771
29.131
21.308
18.133
14.958
13.371
10.287
49.883
38.771
41.488
35.138
28.788
24.221
19.606
16.431
13.371
13.52
36.449
74.826
38.936
29.299
21.460
18.285
15.110
13.520
10.424
50.053
38.936
41.686
35.331
28.979
24.407
25.4
19.766
16.589
36.660
75.034
76.2
39.688
30.163
22.225
19.050
15.875
14.288
11.113
50.800
39.688
42.863
36.513
30.163
20.638
17.463
14.288
38.100
8
6
4
2
标号
48
B-09标号
40
32
24
20
16
12
螺纹代号
3/4-14NPTF
1/2-14NPTF
3/8-18NPTF
1/4-18NPTF
1/8-27NPTF
2-11.5NPTF
1-11.5NPTF
1.1/2-11.5NPTF
1.1/4-11.5NPTF
2.1/2-8NPTF
3-8NPTF
5
你螺纹代号
0.860in*14
9.233
外螺纹小端中径
84.852
9.652外螺纹大端中径86.757
9.871外螺纹小端大径最小87.252
9.96087.335
69.076
70.882
71.476
71.559
19.215
58.325
57.219
67.67656.589
45.207
44.551
46.28740.21831.46125.117
39.13630.41124.239
38.48229.72523.678
18.37717.95317.34313.86113.55610.35810.206
19.77215.92612.487
18.92615.28111.862
18.33314.83711.398
56.67744.64038.57029.81323.76818.42014.92411.486
17.70117.29517.29516.78714.05413.57110.33010.020
59.36947.35741.28732.56226.01820.70316.63413.215
6.70328.893
70.159
68.481
67.759
26.848
9.489
9.058
8.763
8.851
6.924
59.28147.26941.19932.47425.93120.61616.54713.128
外螺纹小端大径最大
58.83446.76940.67331.91025.44520.11116.19312.764
57.633
45.621
39.551
30.826
24.579
19.264
15.545
12.126
大径MIN
21.844
20.683
中径MIN
NPTF+密封管螺纹
外螺纹全牙长度
30.480
86.068
84.257
83.585
83.668
28.981
20.841
中径MAX
内螺纹大端中径
内螺纹小端中径
内螺纹大端小径最小
小径MIN
19.522
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。
内螺纹大端小径最大
内螺纹全牙长度
小径MAX
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