螺纹基本尺寸对照表.docx
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螺纹基本尺寸对照表
英制管螺纹基本尺寸及公差(牙形角55o)BSPP
螺纹代号
G1/8″×28
G1/4″×19
G3/8″×19
G1/2″×14
G5/8″×14
G3/4″×14
G1″×11
G1.1/4″×11
G1.1/2″×11
G2″×11
G2.1/2”X11
G3”X11
G3.1/2”X11
基本直径
内螺纹
外螺纹
A级
B级
大径
中径
小径
中径公差
小径公差
中径公差
大径公差
中径公差
大径公差
9.728
9.147
8.566
+0.170
+0.282
0
0
0
0
0
-0.107
-0.214
-0.214
-0.214
13.157
12.301
11.445
+0.125
+0.445
-0.125
-0.250
-0.250
0-0.250
16.662
15.806
14.950
+0.125
+0.445
0
0
0
0
0
0
-0.125
-0.250
-0.250
-0.250
20.955
19.793
18.631
+0.142
+0.541
0
0
0
0
0
0
-0.142
-0.284
-0.284
-0.284
22.911
21.749
20.587
+0.142
+0.541
0
0
0
0
0
0
-0.142
-0.284
-0.284
-0.284
26.441
25.279
24.117
+0.142
+0.541
0
0
0
0
0
0
-0.142
-0.284
-0.284
-0.284
33.249
31.770
30.291
+0.180
+0.640
0
0
0
0
0
0
-0.180
-0.360
-0.360
-0.360
41.910
40.431
38.952
+0.180
+0.640
0
0
0
0
0
0
-0.180
-0.360
-0.360
-0.360
47.803
46.324
44.854
+0.180
+0.640
0
0
0
0
0
0
-0.180
-0.360
-0.360
-0.360
59.614
58.135
56.656
+0.180
+0.640
0
0
0
0
0
0
-0.180
-0.360
-0.360
-0.360
75.184
73.705
72.226
+0.217
+0.640
0
0
0
0
0
0
-0.217
-0.434
-0.434
-0.434
87.884
86.405
84.926
+0.217
+0.640
0
0
0
0
0
0
-0.217
-0.434
-0.434
-0.434
100.330
98.851
97.372
+0.217
+0.640
0
0
0
0
0
0
-0.217
-0.434
-0.434
-0.434
英制锥管螺纹基本尺寸及公差(牙形角
55o)
BSPT
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
螺纹代号
大径
中径
小径
基本
最大
最小
基本
最大
最小
位移偏差(±mm)
R1/8″×
28
9.728
9.147
8.566
4.0
4.9
3.1
6.5
7.4
5.6
1.1
R1/4″×
19
13.157
12.301
11.445
6.0
7.3
4.7
9.7
11.0
8.4
1.7
R3/8″×
19
16.662
15.806
14.950
6.4
7.7
5.1
10.1
11.4
8.8
1.7
R1/2″×
14
20.955
19.793
18.631
8.2
10.0
6.4
13.2
15.0
11.4
2.3
R3/4″×
14
26.441
25.279
24.117
9.5
11.3
7.7
14.5
16.3
12.7
2.3
R1″×11
33.249
31.770
30.291
10.4
12.7
8.1
16.8
19.1
14.5
2.9
R1.1/4″×11
41.910
40.431
38.952
12.7
15.0
10.4
19.1
21.4
16.8
2.9
R1.1/2″×11
47.803
46.324
44.845
12.7
15.0
10.4
19.1
21.4
16.8
2.9
R2″×11
59.614
58.135
56.656
15.9
18.2
13.6
23.4
25.7
21.1
2.9
R2.1/2”X11
75.184
73.705
72.226
17.5
21.0
14.0
26.7
30.2
23.2
3.5
R3”X11
87.884
86.405
84.926
20.6
24.1
17.1
29.8
33.3
26.3
3.5
R3.1/2”X11
100.330
98.851
97.372
22.2
25.7
18.7
31.4
34.9
27.9
3.5
美制管螺纹基本尺寸及公差(牙形角60o)UN(F)
螺纹代号
7/16″×20UNF1/2″×20UNF9/16″×18UNF3/4″×16UNF7/8″×14UNF1-1/16″×12UN1-5/16″×12UN1-5/8″×12UN1-7/8″×12UN2-1/2″×12UN
9/16″×18UNF11/16″×16UN13/16″×16UN1″×14UNF1-3/16″×12UN1-7/16″×12UN1-11/16″×12UN2″×12UN
5/8″×18UNF1-1/16″×14UN
外螺纹
内螺纹
公差等级
公差等级
2A
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
JIC螺纹
11.079
10.874
10.254
10.147
9.568
9.728
10.033
10.287
10.424
11.113
12.667
12.461
11.841
11.732
11.156
11.328
11.608
11.875
12.017
12.7
14.252
14.031
13.335
13.221
12.573
12.751
13.081
13.371
13.52
14.288
19.012
18.773
17.981
17.854
17.12
17.323
17.678
18.019
18.184
19.05
22.184
21.923
21.006
20.869
20.025
20.269
20.676
21.046
21.224
22.225
26.944
26.655
25.57
25.425
24.425
24.689
25.146
25.613
25.801
26.988
33.294
33.005
31.92
31.773
30.775
31.039
31.496
31.963
32.154
33.338
41.229
40.94
39.885
39.705
38.71
38.989
39.446
39.901
40.094
41.275
47.579
47.29
46.205
46.053
45.06
45.339
45.796
46.251
46.449
47.625
63.452
63.162
62.078
61.92
60.932
61.214
61.671
62.126
62.332
63.5
ORFS螺纹
14.252
14.031
13.335
13.221
12.573
12.751
13.081
13.371
13.52
14.288
17.427
17.188
16.396
16.274
15.535
15.748
16.104
16.431
16.589
17.463
20.599
20.361
19.568
19.444
18.707
18.923
19.279
19.606
19.766
20.638
25.357
25.095
24.178
24.036
23.195
23.444
23.825
24.221
24.407
25.4
30.119
29.83
28.745
28.598
27.6
27.864
28.321
28.788
28.979
30.163
36.467
36.177
35.093
34.943
33.947
34.214
34.671
35.138
35.331
36.513
42.817
42.527
41.443
41.29
40.297
40.564
41.021
41.488
41.686
42.863
50.754
50.465
49.38
49.225
48.235
48.514
48.971
49.426
49.627
50.8
SAE螺纹
15.839
15.618
14.923
14.803
14.161
14.351
14.681
14.958
15.11
15.875
26.947
26.683
25.743
25.608
24.74
24.968
25.375
25.783
25.961
26.987
其它美制螺纹
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
57.104
56.815
55.73
55.575
54.585
54.864
55.321
55.776
55.976
57.15
注:
UNC粗牙螺纹系列,UNF细牙螺纹系列,UNEF超细牙螺纹系列,UN不变螺距系列
布锥管螺纹基本尺寸及公差(牙形角60o)
NPT
螺纹代号
基面上的直径
螺纹长度
大径
中径
小径
有效长度
管端至基面长
Z1/8″×27
10.272
9.519
8.766
7
4.572
Z1/4″×
18
13.572
12.443
11.314
9.5
5.080
Z3/8″×
18
17.055
15.926
14.797
10.5
6.096
Z1/2″×
14
21.223
19.772
18.321
13.5
8.028
Z3/4″×14
26.568
25.117
23.666
14
8.611
Z1″×11.5
33.228
31.461
29.694
17.5
10.160
Z1.1/4″×11.5
41.985
40.218
38.451
18
10.688
Z1.1/2″×
11.5
48.054
46.287
44.520
18.5
10.688
Z2″×11.5
60.092
58.325
56.558
19
11.074
公制螺纹基本尺寸及公差(牙形角60o)M
基本直径
螺纹代号
大径中径小径
M10X1
10
9.350
8.917
M12X1
12
11.350
10.917
M14X1
14
13.350
12.917
M12X1.25
12
11.188
10.647
M14X1.25
14
13.188
12.647
M12X1.5
12
11.026
10.376
M14X1.5
14
13.026
12.376
M16X1.5
16
15.026
14.376
M18X1.5
18
17.026
16.373
M20X1.5
20
19.026
18.376
M22X1.5
22
21.026
20.376
M24X1.5
24
23.026
22.376
M26X1.5
26
25.026
24.376
M27X1.5
27
26.026
25.376
M30X1.5
30
29.026
28.376
M33X1.5
33
32.026
31.376
M36X1.5
36
35.026
34.376
M39X1.5
39
38.026
37.376
M42X1.5
42
41.026
40.376
M27X2
27
25.701
24.835
M30X2
30
28.701
27.835
M33X2
33
31.701
30.835
M36X2
36
34.701
33.835
M39X2
39
37.701
36.835
M42X2
42
40.701
39.835
M45X2
45
43.701
42.835
M52X2
52
50.701
49.835
M60X2
60
58.701
57.835
M64X2
64
62.701
61.835
M72X2
72
70.701
69.835
内螺纹
外螺纹
公差等级
公差等级
6H
7H
6g
中径公差
小径公差
中径公差
小径公差
中径公差
大径公差
+0.150
+0.236
+0.190
+0.300
-0.026
-0.026
0
0
0
0
-0.138
-0.206
+0.160
+0.236
+0.200
+0.300
-0.026
-0.026
0
0
0
0
-0.144
-0.206
+0.160
+0.236
+0.200
+0.300
-0.026
-0.026
0
0
0
0
-0.144
-0.206
+0.180
+0.265
+0.224
+0.335
-0.028
-0.028
0
0
0
0
-0.160
-0.240
+0.180
+0.265
+0.224
+0.335
-0.028
-0.028
0
0
0
0
-0.160
-0.240
+0.190
+0.300
+0.236
+0.375
-0.032
-0.032
0
0
0
0
-0.172
-0.268
+0.190
+0.300
+0.236
+0.375
-0.032
-0.032
0
0
0
0
-0.172
-0.268
+0.190
+0.300
+0.236
+0.375
-0.032
-0.032
0
0
0
0
-0.172
-0.268
+0.190
+0.300
+0.236
+0.375
-0.032
-0.032
0
0
0
0
-0.172
-0.268
+0.190
+0.300
+0.236
+0.375
-0.032
-0.032
0
0
0
0
-0.172
-0.268
+0.190
+0.300
+0.236
+0.375
-0.032
-0.032
0
0
0
0
-0.172
-0.268
+0.200
+0.300
+0.250
+0.375
-0.032
-0.032
0
0
0
0
-0.182
-0.268
+0.200
+0.300
+0.250
+0.375
-0.032
-0.032
0
0
0
0
-0.182
-0.268
+0.200
+0.300
+0.250
+0.375
-0.032
-0.032
0
0
0
0
-0.182
-0.268
+0.200
+0.300
+0.250
+0.375
-0.032
-0.032
0
0
0
0
-0.182
-0.268
+0.200
+0.300
+0.250
+0.375
-0.032
-0.032
0
0
0
0
-0.182
-0.268
+0.200
+0.300
+0.250
+0.375
-0.032
-0.032
0
0
0
0
-0.182
-0.268
+0.200
+0.300
+0.250
+0.375
-0.032
-0.032
0
0
0
0
-0.182
-0.268
+0.200
+0.300
+0.250
+0.375
-0.032
-0.032
0
0
0
0
-0.182
-0.268
+0.224
+0.375
+0.280
+0.475
-0.038
-0.038
0
0
0
0
-0.208
-0.318
+0.224
+0.375
+0.280
+0.475
-0.038
-0.038
0
0
0
0
-0.208
-0.318
+0.224
+0.375
+0.280
+0.475
-0.038
-0.038
0
0
0
0
-0.208
-0.318
+0.224
+0.375
+0.280
+0.475
-0.038
-0.038
0
0
0
0
-0.208
-0.318
+0.224
+0.375
+0.280
+0.475
-0.038
-0.038
0
0
0
0
-0.208
-0.318
+0.224
+0.375
+0.280
+0.475
-0.038
-0.038
0
0
0
0
-0.208
-0.318
+0.224
+0.375
+0.280
+0.475
-0.038
-0.038
0
0
0
0
-0.208
-0.318
+0.236
+0.375
+0.300
+0.475
-0.038
-0.038
0
0
0
0
-0.218
-0.318
+0.236
+0.375
+0.300
+0.475
-0.038
-0.038
0
0
0
0
-0.218
-0.318
+0.236
+0.375
+0.300
+0.475
-0.038
-0.038
0
0
0
0
-0.218
-0.318
+0.236
+0.375
+0.300
+0.475
-0.038
-0.038
0
0
0
0
-0.218
-0.318
55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达
55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达
55°圆锥管螺纹(BSPT)
螺
纹
基本
尺寸
大
径
螺
距
每
英
寸
小
中
径
径
外
mm
牙型高度
代
号
R
1
/
1
6
R
1
/
8
R
1
/
4
R
3
/
8
R
1
mm
英寸d=
D
1/1
7.7
6"
23
1/8
9.7
"
28
1/4
13.
"
157
3/8
16.
"
662
1/2
20.
"
955
mm
p
0.9
07
0.9
07
1.3
37
1.3
37
1.8
14
牙
数
tpi
28
28
19
19
14
螺
d2
纹
=D
d
2
3
6.
7.1
5
42
6
1
8.
9.1
5
47
6
6
1
1.
12.
4
301
4
5
1
4.
15.
9
806
5
0
19.
1
793
8.
H1
0.581
0.581
0.856
0.856
1.162
/
6
2
3
1