GB /T 15756 – 2008
Limit dimensions of ordinary threads GB/T 15756-2008
-
Tolerance zone 4H: Limit size table 1 of internal threads with nominal diameter 1mm~100mm
Table 1 Limit dimensions of 4H internal thread (unit: mm )
Nominal diameter
D
pitch
P
Da Jia
Dmin _
Medium diameter
trails
D2max _
D2min _
D1max _
D 1min
1
0.2
1
0.91
0.87
0.821
0.783
0.25
1
0.883
0.838
0.774
0.729
1.1
0.2
1.1
1.01
0.97
0.921
0.883
0.25
1.1
0.983
0.938
0.874
0.829
1.2
0.2
1.2
1.11
1.07
1.021
0.983
0.25
1.2
1.083
1.038
0.974
0.929
1.4
0.2
1.4
1.31
1.27
1.221
1.183
0.3
1.4
1.253
1.205
1.128
1.075
1.6
0.2
1.6
1.512
1.47
1.421
1.383
0.35
1.6
1.426
1.373
1.284
1.221
1.8
0.2
1.8
1.712
1.67
1.621
1.583
0.35
1.8
1.626
1.573
1.484
1.421
2
0.25
2
1.886
1.838
1.774
1.729
0.4
2
1.796
1.74
1.638
1.567
2.2
0.25
2.2
2.086
2.038
1.974
1.929
0.45
2.2
1.968
1.908
1.793
1.713
2.5
0.35
2.5
2.326
2.273
2.184
2.121
0.45
2.5
2.268
2.208
2.093
2.013
3
0.35
3
2.829
2.773
2.684
2.621
0.5
3
2.738
2.675
2.549
2.459
3.5
0.35
3.5
3.329
3.273
3.184
3.121
0.6
3.5
3.181
3.11
2.95
2.85
4
0.5
4
3.738
3.675
3.549
3.459
0.7
4
3.62
3.545
3.354
3.242
4.5
0.5
4.5
4.238
4.175
4.049
3.959
0.75
4.5
4.088
4.013
3.806
3.688
5
0.5
5
4.738
4.675
4.549
4.459
0.8
5
4.56
4.48
4.259
4.134
5.5
0.5
5.5
5.238
5.175
5.049
4.959
6
0.75
6
5.598
5.513
5.306
5.188
1
6
5.445
5.35
5.067
4.917
7
0.75
7
6.598
6.513
6.306
6.188
1
7
6.445
6.35
6.067
5.917
8
0.75
8
7.598
7.513
7.306
7.188
1
8
7.445
7.35
7.067
6.917
1.25
8
7.288
7.188
6.817
6.647
9
0.75
9
8.598
8.513
8.306
8.188
1
9
8.445
8.35
8.067
7.917
1.25
9
8.288
8.188
7.817
7.647
10
0.75
10
9.598
9.513
9.306
9.188
1
10
9.445
9.35
9.067
8.917
1.25
10
9.288
9.188
8.817
8.647
1.5
10
9.138
9.026
8.566
8.376
11
0.75
11
10.598
10.513
10.306
10.188
1
11
10.445
10.35
10.067
9.917
1.5
11
10.138
10.026
9.566
9.376
12
1
12
11.45
11.35
11.067
10.917
1.25
12
11.3
11.188
10.817
10.647
1.5
12
11.144
11.026
10.566
10.376
1.75
12
10.988
10.863
10.318
10.106
14
1
14
13.45
13.35
13.067
12.917
1.5
14
13.144
13.026
12.566
12.376
2
14
12.833
12.701
12.071
11.835
15
1
15
14.45
14.35
14.067
13.917
1.5
15
14.144
14.026
13.566
13.376
16
1
16
15.45
15.35
15.067
14.917
1.5
16
15.144
15.026
14.566
14.376
2
16
14.833
14.701
14.071
13.835
17
1
17
16.45
16.35
16.067
15.917
1.5
17
16.144
16.026
15.566
15.376
18
1
18
17.45
17.35
17.067
16.917
1.5
18
17.144
17.026
16.566
16.376
2
18
16.833
16.701
16.071
15.835
2.5
18
16.516
16.376
15.574
15.294
20
1
20
19.45
19.35
19.067
18.917
1.5
20
19.144
19.026
18.566
18.376
2
20
18.833
18.071
18.071
17.835
2.5
20
18.516
18.376
17.574
17.294
22
1
22
21.45
21.35
21.067
20.917
1.5
22
21.144
21.026
20.566
20.376
2
22
20.833
20.701
20.071
19.835
2.5
22
20.516
20.376
19.574
19.294
24
1
24
23.456
23.35
23.067
22.917
1.5
24
23.151
23.026
22.566
22.376
2
24
22.841
22.701
22.071
21.835
3
24
22.221
22.051
21.067
20.752
25
1
25
24.456
24.35
24.067
23.917
1.5
25
24.151
24.026
23.566
23.376
2
25
23.841
23.701
23.071
22.835
26
1.5
26
25.151
25.026
24.566
24.376
27
1
27
26.456
26.35
26.067
25.917
1.5
27
26.151
26.026
25.566
25.376
2
27
25.841
25.701
25.071
24.835
3
27
25.221
25.051
24.067
23.752
28
1
28
27.456
27.35
27.067
26.917
1.5
28
27.151
27.026
26.566
26.376
2
28
26.841
26.701
26.071
25.835
30
1
30
29.456
29.35
29.067
28.917
1.5
30
29.151
29.026
28.566
28.376
2
30
28.841
028.701
28.071
27.835
3
30
28.221
28.051
27.067
26.752
3.5
30
27.907
27.727
26.566
26.211
32
1.5
32
31.151
31.026
30.566
30.376
2
32
30.841
30.701
30.071
29.835
33
1.5
33
32.151
32.026
31.566
31.376
2
33
31.841
31.701
31.071
30.835
3
33
31.221
31.051
30.067
29.752
3.5
33
30.907
30.727
29.566
29.211
36
1.5
36
35.151
35.026
34.566
34.376
2
36
34.841
34.701
34.071
33.835
3
36
34.221
34.051
33.067
32.752
4
36
33.592
33.402
32.045
31.67
38
1.5
38
37.151
37.026
36.566
36.376
39
1.5
39
38.151
38.026
37.566
37.376
2
39
37.841
37.701
37.071
36.835
3
39
37.221
37.051
36.067
35.752
4
39
36.592
36.402
35.045
34.67
40
1.5
40
39.151
39.026
38.566
38.376
2
40
38.841
38.701
38.071
37.835
3
40
38.221
38.051
37.067
36.752
42
1.5
42
41.151
41.026
40.566
40.376
2
42
40.841
40.701
40.071
39.835
3
42
40.221
40.051
39.067
38.752
4
42
39.592
39.402
38.045
37.67
4.5
42
39.277
39.077
37.554
37.129
45
1.5
45
44.151
44.026
43.566
43.376
2
45
43.841
43.701
43.071
42.835
3
45
43.221
43.051
42.067
41.752
4
45
42.592
42.402
41.045
40.67
4.5
45
42.277
42.077
40.554
40.129
48
1.5
48
47.158
47.026
46.566
46.376
2
48
46.851
46.701
46.071
45.835
3
48
46.231
46.051
45.067
44.752
4
48
45.602
45.402
44.045
43.67
5
48
44.964
44.752
43.037
42.587
50
1.5
50
49.158
49.026
48.566
48.376
2
50
48.851
48.701
48.071
47.835
3
50
48.231
48.051
47.067
46.752
52
1.5
52
51.158
51.026
50.566
50.376
2
52
50.851
50.701
50.071
49.835
3
52
50.231
50.051
49.067
48.752
4
52
49.602
49.402
48.045
47.67
5
52
48.964
48.752
47.037
46.587
55
1.5
55
54.158
54.026
53.566
53.376
2
55
53.851
53.701
53.071
52.835
3
55
53.231
53.051
52.067
51.752
4
55
52.602
52.402
51.045
50.67
56
1.5
56
55.158
55.026
54.566
54.376
2
56
54.851
54.701
54.071
53.835
3
56
54.231
54.051
53.067
52.752
4
56
53.602
53.402
52.045
51.67
5.5
56
52.652
52.428
50.521
50.046
58
1.5
58
57.158
57.026
56.566
56.376
2
58
56.851
56.701
56.071
55.835
3
58
56.231
56.051
55.067
54.752
4
58
55.602
55.402
54.045
53.67
60
1.5
60
59.158
59.026
58.566
58.376
2
60
58.851
58.701
58.071
57.835
3
60
58.231
58.051
57.067
56.752
4
60
57.602
57.402
56.045
55.67
5.5
60
56.652
56.428
54.521
54.046
62
1.5
62
61.158
61.026
60.566
60.376
2
62
60.851
60.701
60.071
59.835
3
62
60.231
60.051
59.067
58.752
4
62
59.602
59.402
58.045
57.67
64
1.5
64
63.158
63.026
62.566
62.376
2
64
62.851
62.701
62.071
61.835
3
64
62.231
62.051
61.067
60.752
4
64
61.602
61.402
60.045
59.67
6
64
60.339
60.103
58.005
57.505
65
1.5
65
64.158
64.026
63.566
63.376
2
65
63.851
63.701
63.071
62.835
3
65
63.231
63.051
62.067
61.752
4
65
62.602
62.402
61.045
60.67
68
1.5
68
67.158
67.026
66.566
66.376
2
68
66.851
66.701
66.071
65.835
3
68
66.231
66.051
65.067
64.752
4
68
65.602
65.402
64.045
63.67
6
68
64.339
64.103
62.005
61.505
70
1.5
70
69.158
69.026
68.566
68.376
2
70
68.851
68.701
68.071
67.835
3
70
68.231
68.051
67.067
66.752
4
70
67.602
67.402
66.045
65.67
6
70
66.339
66.103
64.005
63.505
72
1.5
72
71.158
71.026
70.566
70.376
2
72
70.851
70.701
70.071
69.835
3
72
70.231
70.051
69.067
68.752
4
72
69.602
69.402
68.045
67.67
6
72
68.339
68.103
66.005
65.505
75
1.5
75
74.158
74.026
73.566
73.376
2
75
73.851
73.701
73.071
72.835
3
75
73.231
73.051
72.067
71.752
4
75
72.602
72.402
71.045
70.67
76
1.5
76
75.158
75.026
74.566
74.376
2
76
74.851
74.701
74.071
73.835
3
76
74.231
74.051
73.067
72.752
4
76
73.602
73.402
72.045
71.67
6
76
72.339
72.103
70.005
69.505
78
2
78
76.851
76.701
76.071
75.835
80
1.5
80
79.158
79.026
78.566
78.376
2
80
78.851
78.701
78.071
77.835
3
80
78.231
78.051
77.067
76.752
4
80
77.602
77.402
76.045
75.67
6
80
76.339
76.103
74.005
73.505
82
2
82
80.851
80.701
80.071
79.835
85
2
85
83.851
83.071
83.071
82.835
3
85
83.231
83.051
82.067
81.752
4
85
82.602
82.402
81.045
80.67
6
85
81.339
81.103
79.005
78.505
90
2
90
88.851
88.701
88.071
87.835
3
90
88.231
88.051
87.067
86.752
4
90
87.602
87.402
86.045
85.67
6
90
86.339
86.103
84.005
83.505
95
2
95
93.861
93.701
93.071
92.835
3
95
93.241
93.051
92.067
91.752
4
95
92.614
92.402
91.045
90.67
6
95
91.353
91.103
89.005
88.505
100
2
100
98.861
98.701
98.071
97.835
3
100
98.241
98.051
97.067
96.752
4
100
97.614
97.402
96.045
95.67
6
100
96.353
96.103
94.005
93.505
-
Tolerance zone 5H: Limit size table 2 of internal threads with nominal diameter 1mm~300mm
Table 2 Limit dimensions of 5H internal thread (unit: mm )
Nominal diameter
D
pitch
P
Da Jia
Dmin _
Medium diameter
trails
D2max _
D2min _
D1max _
D 1min
1
0.25
1
0.894
0.838
0.785
0.729
1.1
0.25
1.1
0.994
0.938
0.885
0.829
1.2
0.25
1.2
1.094
1.038
0.985
0.929
1.4
0.3
1.4
1.265
1.205
1.142
1.075
1.6
0.35
1.6
1.44
1.373
1.301
1.221
1.8
0.35
1.8
1.64
1.573
1.501
1.421
2
0.25
2
1.898
1.838
1.785
1.729
0.4
2
1.811
1.74
1.657
1.567
2.2
0.25
2.2
2.098
2.038
1.985
1.929
0.45
2.2
1.983
1.908
1.813
1.713
2.5
0.35
2.5
2.34
2.273
2.201
2.121
0.45
2.5
2.283
2.208
2.113
2.013
3
0.35
3
2.844
2.773
2.701
2.621
0.5
3
2.755
2.675
2.571
2.459
3.5
0.35
3.5
3.344
3.273
3.201
3.121
0.6
3.5
3.2
3.11
2.975
2.85
4
0.5
4
3.755
3.675
3.571
3.459
0.7
4
3.64
3.545
3.382
3.242
4.5
0.5
4.5
4.255
4.175
4.071
3.959
0.75
4.5
4.108
4.013
3.838
3.688
5
0.5
5
4.755
4.675
4.571
4.459
0.8
5
4.58
4.48
4.294
4.134
5.5
0.5
5.5
5.255
5.175
5.071
4.959
6
0.75
6
5.619
5.513
5.338
5.188
1
6
5.468
5.35
5.107
4.917
7
0.75
7
6.619
6.513
6.338
6.188
1
7
6.468
6.35
6.107
5.917
8
0.75
8
7.619
7.513
7.338
7.188
1
8
7.468
7.35
7.107
6.917
1.25
8
7.313
7.188
6.859
6.647
9
0.75
9
8.619
8.513
8.338
8.188
1
9
8.468
8.35
8.107
7.917
1.25
9
8.313
8.188
7.859
7.647
10
0.75
10
9.619
9.513
9.338
9.188
1
10
9.468
9.35
9.107
8.917
1.25
10
9.313
9.188
8.859
8.647
1.5
10
9.166
9.026
8.612
8.376
11
0.75
11
10.619
10.513
10.338
10.188
1
11
10.468
10.35
10.107
9.917
1.5
11
10.166
10.026
9.612
9.376
12
1
12
11.475
11.35
11.107
10.917
1.25
12
11.328
11.188
10.859
10.647
1.5
12
11.176
11.026
10.612
10.376
1.75
12
11.023
10.863
10.371
10.106
14
1
14
13.475
13.35
13.107
12.917
1.5
14
13.176
13.026
12.612
12.376
2
14
12.871
12.701
12.135
11.835
15
1
15
14.475
14.35
14.107
13.917
1.5
15
14.176
14.026
13.612
13.376
16
1
16
15.475
15.35
15.107
14.917
1.5
16
15.176
15.026
14.612
14.376
2
16
14.871
14.701
14.135
13.835
17
1
17
16.475
16.35
16.107
15.917
1.5
17
16.176
16.026
15.612
15.376
18
1
18
17.475
17.35
17.107
16.917
1.5
18
17.176
17.026
16.612
16.376
2
18
16.871
16.701
16.135
15.835
2.5
18
16.556
16.376
15.649
15.294
20
1
20
19.475
19.35
19.107
18.917
1.5
20
19.176
19.026
18.612
18.376
2
20
18.871
18.701
18.135
17.835
2.5
20
18.556
18.376
17.649
17.294
22
1
22
21.475
21.35
21.107
20.917
1.5
22
21.176
21.026
20.612
20.376
2
22
20.871
20.701
20.135
19.835
2.5
22
20.556
20.376
19.649
19.294
24
1
24
23.482
23.35
23.107
22.917
1.5
24
23.186
23.026
22.612
22.376
2
24
22.881
22.701
22.135
21.835
3
24
22.263
22.051
21.152
20.752
25
1
25
24.482
24.35
24.107
23.917
1.5
25
24.186
24.026
23.612
23.376
2
25
23.881
23.701
23.135
22.835
26
1.5
26
25.186
25.026
24.612
24.376
27
1
27
26.482
26.35
26.107
25.917
1.5
27
26.186
26.026
25.612
25.376
2
27
25.881
25.701
25.135
24.835
3
27
25.263
25.051
24.152
23.752
28
1
28
27.482
27.35
27.107
26.917
1.5
28
27.186
27.026
26.612
26.376
2
28
26.881
26.701
26.135
25.835
30
1
30
29.482
29.35
29.107
28.917
1.5
30
29.186
29.026
28.612
28.376
2
30
28.881
28.701
28.135
27.835
3
30
28.263
28.051
27.152
26.752
3.5
30
27.951
27.727
26.661
26.211
32
1.5
32
31.186
31.026
30.612
30.376
2
32
30.881
30.701
30.135
29.835
33
1.5
33
32.186
32.026
31.612
31.376
2
33
31.881
31.701
31.135
30.835
3
33
31.263
31.051
30.152
29.752
3.5
33
30.951
30.727
29.661
29.211
36
1.5
36
35.186
35.026
34.612
34.376
2
36
34.881
34.701
34.135
33.835
3
36
34.263
34.051
33.152
32.752
4
36
33.638
33.402
32.145
31.67
38
1.5
38
37.186
37.026
36.612
36.376
39
1.5
39
38.186
38.026
37.612
37.376
2
39
37.881
37.701
37.135
36.835
3
39
37.263
37.051
36.152
35.752
4
39
36.638
36.402
35.145
34.67
40
1.5
40
39.186
39.026
38.612
38.376
2
40
38.881
38.701
38.135
37.835
3
40
38.263
38.051
37.152
36.752
42
1.5
42
41.186
41.026
40.612
40.376
2
42
40.881
40.701
40.135
39.835
3
42
40.263
40.051
39.152
38.752
4
42
39.638
39.402
38.145
37.67
4.5
42
39.327
39.077
37.659
37.129
45
1.5
45
44.186
44.026
43.612
43.376
2
45
43.881
43.701
43.135
42.835
3
45
43.263
43.051
42.152
41.752
4
45
42.638
42.402
41.145
40.67
4.5
45
42.327
42.077
40.659
40.129
48
1.5
48
47.196
47.026
46.612
46.376
2
48
46.891
46.701
46.135
45.835
3
48
46.275
46.051
45.152
44.752
4
48
45.652
45.402
44.145
43.67
5
48
45.017
44.752
43.147
42.587
50
1.5
50
49.196
49.026
48.612
48.376
2
50
48.891
48.701
48.135
47.835
3
50
48.275
48.051
47.152
46.752
52
1.5
52
51.196
51.026
50.612
50.376
2
52
50.891
50.701
50.135
49.835
3
52
50.275
50.051
49.152
48.752
4
52
49.652
49.402
48.145
47.67
5
52
49.017
48.752
47.147
46.587
55
1.5
55
54.196
54.026
53.612
53.376
2
55
53.891
53.701
53.135
52.835
3
55
53.275
53.051
52.152
51.752
4
55
52.652
52.402
51.145
50.67
56
1.5
56
55.196
55.026
54.612
54.376
2
56
54.891
54.701
54.135
53.835
3
56
54.275
54.051
53.152
52.752
4
56
53.652
53.402
52.145
51.67
5.5
56
52.708
52.428
50.646
50.046
58
1.5
58
57.196
57.026
56.612
56.376
2
58
56.891
56.701
56.135
55.835
3
58
56.275
56.051
55.152
54.752
4
58
55.652
55.402
54.145
53.67
60
1.5
60
59.196
59.026
58.612
58.376
2
60
58.891
58.701
58.135
57.835
3
60
58.275
58.051
57.152
56.752
4
60
57.652
57.402
56.145
55.67
5.5
60
56.708
56.428
54.646
54.046
62
1.5
62
61.196
61.026
60.612
60.376
2
62
60.891
60.701
60.135
59.835
3
62
60.275
60.051
59.152
58.752
4
62
59.652
59.402
58.145
57.67
64
1.5
64
63.196
63.026
62.612
62.376
2
64
62.891
62.701
62.135
61.835
3
64
62.275
62.051
61.152
60.752
4
64
61.652
61.402
60.145
59.67
6
64
60.403
60.103
58.135
57.505
65
1.5
65
64.196
64.026
63.612
63.376
2
65
63.891
63.701
63.135
62.835
3
65
63.275
63.051
62.152
61.752
4
65
62.652
62.402
61.145
60.67
68
1.5
68
67.196
67.026
66.612
66.376
2
68
66.891
66.701
66.135
65.835
3
68
66.275
66.051
65.152
64.752
4
68
65.652
65.402
64.145
63.67
6
68
64.403
64.103
62.135
61.505
70
1.5
70
69.196
69.026
68.612
68.376
2
70
68.891
68.701
68.135
67.835
3
70
68.275
68.051
67.152
66.752
4
70
67.652
67.402
66.145
65.67
6
70
66.403
66.103
64.135
63.505
72
1.5
72
71.196
71.026
70.612
70.376
2
72
70.891
70.701
70.135
69.835
3
72
70.275
70.051
69.152
68.752
4
72
69.652
69.402
68.145
67.67
6
72
68.403
68.103
66.135
65.505
75
1.5
75
74.196
74.026
73.612
73.376
2
75
73.891
73.701
73.135
72.835
3
75
73.275
73.051
72.152
71.752
4
75
72.652
72.402
71.145
70.67
76
1.5
76
75.196
75.026
74.612
74.376
2
76
74.891
74.701
74.135
73.835
3
76
74.275
74.051
73.152
72.752
4
76
73.652
73.402
72.145
71.67
6
76
72.403
72.103
70.135
69.505
78
2
78
76.891
76.701
76.135
75.835
80
1.5
80
79.196
79.026
78.612
78.376
2
80
78.891
78.701
78.135
77.835
3
80
78.275
78.051
77.152
76.752
4
80
77.652
77.402
76.145
75.67
6
80
76.403
76.103
74.135
73.505
82
2
82
80.891
80.701
80.135
79.835
85
2
85
83.891
83.701
83.135
82.835
3
85
83.275
83.051
82.152
81.752
4
85
82.652
82.402
81.145
80.67
6
85
81.403
81.103
79.135
78.505
90
2
90
88.891
88.701
88.135
87.835
3
90
88.275
88.051
87.152
86.752
4
90
87.652
87.402
86.145
85.67
6
90
86.403
86.103
84.135
83.505
95
2
95
93.901
93.701
93.135
92.835
3
95
93.287
93.051
92.152
91.752
4
95
92.667
92.402
91.145
90.67
6
95
91.418
91.103
89.135
88.505
100
2
100
98.901
98.701
98.135
97.835
3
100
98.287
98.051
97.152
96.752
4
100
97.667
97.402
96.145
95.67
6
100
96.418
96.103
94.135
93.505
105
2
105
103.901
103.701
103.135
102.835
3
105
103.287
103.051
102.152
101.752
4
105
102.667
102.402
101.145
100.67
6
105
101.418
101.103
99.135
98.505
110
2
110
108.901
108.701
108.135
107.835
3
110
108.287
108.051
107.152
106.752
4
110
107.667
107.402
106.145
105.67
6
110
106.418
106.103
104.135
103.505
115
2
115
113.901
113.701
113.135
112.835
3
115
113.287
113.051
112.152
111.752
4
115
112.667
112.402
111.145
110.67
6
115
111.418
111.103
109.135
108.505
120
2
120
118.901
118.701
118.135
117.835
3
120
118.287
118.051
117.152
116.752
4
120
117.667
117.402
116.145
115.67
6
120
116.418
116.103
114.135
113.505
125
2
125
123.901
123.701
123.135
122.835
3
125
123.287
123.051
122.152
121.752
4
125
122.667
122.402
121.145
120.67
6
125
121.418
121.103
119.135
118.505
8
125
120.159
119.804
117.14
116.34
130
2
130
128.901
128.701
128.135
127.835
3
130
128.287
128.051
127.152
126.752
4
130
127.667
127.402
126.145
125.67
6
130
126.418
126.103
124.135
123.505
8
130
125.159
124.804
122.14
121.34
135
2
135
133.901
133.701
133.135
132.835
3
135
133.287
133.051
132.152
131.752
4
135
132.667
132.402
131.145
130.67
6
135
131.418
131.103
129.135
128.505
140
2
140
138.901
138.701
138.135
137.835
3
140
138.287
138.051
137.152
136.752
4
140
137.667
137.402
136.145
135.67
6
140
136.418
136.103
134.135
133.505
8
140
135.159
134.804
132.14
131.34
145
2
145
143.901
143.701
143.135
142.835
3
145
143.287
143.051
142.152
141.752
4
145
142.667
142.402
141.145
140.67
6
145
141.418
141.103
139.135
138.505
150
2
150
148.901
148.701
148.135
147.835
3
150
148.287
148.051
147.152
146.752
4
150
147.667
147.402
146.145
145.67
6
150
146.418
146.103
144.135
143.505
8
150
145.159
144.804
142.14
141.34
155
3
155
153.287
153.051
152.152
151.752
4
155
152.667
152.402
151.145
150.67
6
155
151.418
151.103
149.135
148.505
160
3
160
158.287
158.051
157.152
156.752
4
160
157.667
157.402
156.145
155.67
6
160
156.418
156.103
154.135
153.505
8
160
155.159
154.804
152.14
151.34
165
3
165
163.287
163.051
162.152
161.752
4
165
162.667
162.402
161.145
160.67
6
165
161.418
161.103
159.135
158.505
170
3
170
168.287
168.051
167.152
166.752
4
170
167.667
167.402
166.145
165.67
6
170
166.418
166.103
164.135
163.505
8
170
165.159
164.804
162.14
161.34
175
3
175
173.287
173.051
172.152
171.752
4
175
172.667
172.402
171.145
170.67
6
175
171.418
171.103
169.135
168.505
180
3
180
178.287
178.051
177.152
176.752
4
180
177.667
177.402
176.145
175.67
6
180
176.418
176.103
174.135
173.505
8
180
175.159
174.804
172.14
171.34
185
3
185
183.316
183.051
182.152
181.752
4
185
182.702
182.402
181.145
180.67
6
185
181.438
181.103
179.135
178.505
190
3
190
188.316
188.051
187.152
186.752
4
190
187.702
187.402
186.145
185.67
6
190
186.438
186.103
184.135
183.505
8
190
185.179
184.804
182.14
181.34
195
3
195
193.316
193.051
192.152
191.752
4
195
192.702
192.402
191.145
190.67
6
195
191.438
191.103
189.135
188.505
200
3
200
198.316
198.051
197.152
196.752
4
200
197.702
197.402
196.145
195.67
6
200
196.438
196.103
194.135
193.505
8
200
195.179
194.804
192.14
191.34
205
3
205
203.316
203.051
202.152
201.752
4
205
202.702
202.402
201.145
200.67
6
205
201.438
201.103
199.135
198.505
210
3
210
208.316
208.051
207.152
206.752
4
210
207.702
207.402
206.145
205.67
6
210
206.438
206.103
204.135
203.505
8
210
205.179
204.804
202.14
201.34
215
3
215
213.316
213.051
212.152
211.752
4
215
212.702
212.402
211.145
210.67
6
215
211.438
211.103
209.135
208.505
220
3
220
218.316
218.051
217.152
216.752
4
220
217.702
217.402
216.145
215.67
6
220
216.438
216.103
214.135
213.505
8
220
215.179
214.804
212.14
211.34
225
3
225
223.316
223.051
222.152
221.752
4
225
222.702
222.402
221.145
220.67
6
225
221.438
221.103
219.135
218.505
230
3
230
228.316
228.051
227.152
226.752
4
230
227.702
227.402
226.145
225.67
6
230
226.438
226.103
224.135
223.505
8
230
225.179
224.804
222.14
221.34
235
3
235
233.316
233.051
232.152
231.752
4
235
232.702
232.402
231.145
230.67
6
235
231.438
231.103
229.135
228.505
240
3
240
238.316
238.051
237.152
236.752
4
240
237.702
237.402
236.145
235.67
6
240
236.438
236.103
234.135
233.505
8
240
235.179
234.804
232.14
231.34
245
3
245
243.316
243.051
242.152
241.752
4
245
242.702
242.402
241.145
240.67
6
245
241.438
241.103
239.135
238.505
250
3
250
248.316
248.051
247.152
246.752
4
250
247.702
247.402
246.145
245.67
6
250
246.438
246.103
244.135
243.505
8
250
245.179
244.804
242.14
241.34
255
4
255
252.702
252.402
251.145
250.67
6
255
251.438
251.103
249.135
248.505
260
4
260
257.702
257.402
256.145
255.67
6
260
256.438
256.103
254.135
253.505
8
260
255.179
254.804
252.14
251.34
265
4
265
262.702
262.402
261.145
260.67
6
265
261.438
261.103
259.135
258.505
270
4
270
267.702
267.402
266.145
265.67
6
270
266.438
266.103
264.135
263.505
8
270
265.179
264.804
262.14
261.34
275
4
275
272.702
272.402
271.145
270.67
6
275
271.438
271.103
269.135
268.505
280
4
280
277.702
277.402
276.145
275.67
6
280
276.438
276.103
274.135
273.505
8
280
275.179
274.804
272.14
271.34
285
4
285
282.702
282.402
281.145
280.67
6
285
281.438
281.103
279.135
278.505
290
4
290
287.702
287.402
286.145
285.67
6
290
286.438
286.103
284.135
283.505
8
290
285.179
284.804
282.14
281.34
295
4
295
292.702
292.402
291.145
290.67
6
295
291.438
291.103
289.135
288.505
300
4
300
297.702
297.402
296.145
295.67
6
300
296.438
296.103
294.135
293.505
8
300
295.179
294.804
292.14
291.34
-
Tolerance zone 6H: Table 3 of the limit dimensions of internal threads with a nominal diameter of 1.4mm~300mm
Table 3 Limit dimensions of 6H internal thread
Nominal diameter
D
pitch
P
Da Jia
Dmin _
Medium diameter
trails
D2max _
D2min _
D1max _
D 1min
1.4
0.3
1.4
1.28
1.205
1.16
1.075
1.6
0.35
1.6
1.458
1.373
1.321
1.221
1.8
0.35
1.8
1.658
1.573
1.521
1.421
2
0.4
2
1.83
1.74
1.679
1.567
2.2
0.45
2.2
2.003
1.908
1.838
1.713
2.5
0.35
2.5
2.358
2.273
2.221
2.121
0.45
2.5
2.303
2.208
2.138
2.013
3
0.35
3
2.863
2.773
2.721
2.621
0.5
3
2.775
2.675
2.599
2.459
3.5
0.35
3.5
3.363
3.273
3.221
3.121
0.6
3.5
3.222
3.11
3.01
2.85
4
0.5
4
3.775
3.675
3.599
3.459
0.7
4
3.663
3.545
3.422
3.242
4.5
0.5
4.5
4.275
4.175
4.099
3.959
0.75
4.5
4.131
4.013
3.878
3.688
5
0.5
5
4.775
4.675
4.599
4.459
0.8
5
4.605
4.48
4.334
4.134
5.5
0.5
5.5
5.275
5.175
5.099
4.959
6
0.75
6
5.645
5.513
5.378
5.188
1
6
5.5
5.35
5.153
4.917
7
0.75
7
6.645
6.513
6.378
6.188
1
7
6.5
6.35
6.153
5.917
8
0.75
8
7.645
7.513
7.378
7.188
1
8
7.5
7.35
7.153
6.917
1.25
8
7.348
7.188
6.912
6.647
9
0.75
9
8.645
8.513
8.378
8.188
1
9
8.5
8.35
8.153
7.917
1.25
9
8.348
8.188
7.912
7.647
10
0.75
10
9.645
9.513
9.378
9.188
1
10
9.5
9.35
9.153
8.917
1.25
10
9.348
9.188
8.912
8.647
1.5
10
9.206
9.026
8.676
8.376
11
0.75
11
10.645
10.513
10.378
10.188
1
11
10.5
10.35
10.153
9.917
1.5
11
10.206
10.026
9.676
9.376
12
1
12
11.51
11.35
11.153
10.917
1.25
12
11.368
11.188
10.912
10.647
1.5
12
11.216
11.026
10.676
10.376
1.75
12
11.063
10.863
10.441
10.106
14
1
14
13.51
13.35
13.153
12.917
1.5
14
13.216
13.026
12.676
12.376
2
14
12.913
12.701
12.21
11.835
15
1
15
14.51
14.35
14.153
13.917
1.5
15
14.216
14.026
13.676
13.376
16
1
16
15.51
15.35
15.153
14.917
1.5
16
15.216
15.026
14.676
14.376
2
16
14.913
14.701
14.21
13.835
17
1
17
16.51
16.35
16.153
15.917
1.5
17
16.216
16.026
15.676
15.376
18
1
18
17.51
17.35
17.153
16.917
1.5
18
17.216
17.026
16.676
16.376
2
18
16.913
16.701
16.21
15.835
2.5
18
16.6
16.376
15.744
15.294
20
1
20
19.51
19.35
19.153
18.917
1.5
20
19.216
19.026
18.676
18.376
2
20
18.913
18.701
18.21
17.835
2.5
20
18.6
18.376
17.744
17.294
22
1
22
21.51
21.35
21.153
20.917
1.5
22
21.216
21.026
20.676
20.376
2
22
20.913
20.701
20.21
19.835
2.5
22
20.6
20.376
19.744
19.294
24
1
24
23.52
23.35
23.153
22.917
1.5
24
23.226
23.026
22.676
22.376
2
24
22.925
22.701
22.21
21.835
3
24
22.316
22.051
21.252
20.752
25
1
25
24.52
24.35
24.153
23.917
1.5
25
24.226
24.026
23.676
23.376
2
25
23.925
23.701
23.21
22.835
26
1.5
26
25.226
25.026
24.676
24.376
27
1
27
26.52
26.35
26.153
25.917
1.5
27
26.226
26.026
25.676
25.376
2
27
25.925
25.701
25.21
24.835
3
27
25.316
25.051
24.252
23.752
28
1
28
27.52
27.35
27.153
26.917
1.5
28
27.226
27.026
26.676
26.376
2
28
26.925
26.701
26.21
25.835
30
1
30
29.52
29.35
29.153
28.917
1.5
30
29.226
29.026
28.676
28.376
2
30
28.925
28.701
28.21
27.835
3
30
28.316
28.051
27.252
26.752
3.5
30
28.007
27.727
26.771
26.211
32
1.5
32
31.226
31.026
30.676
30.376
2
32
30.925
30.701
30.21
29.835
33
1.5
33
32.226
32.026
31.676
31.376
2
33
31.925
31.701
31.21
30.835
3
33
31.316
31.051
30.252
29.752
3.5
33
31.007
30.727
29.771
29.211
36
1.5
36
35.226
35.026
34.676
34.376
2
36
34.925
34.701
34.21
33.835
3
36
34.316
34.051
33.252
32.752
4
36
33.702
33.402
32.27
31.67
38
1.5
38
37.226
37.026
36.676
36.376
39
1.5
39
38.226
38.026
37.676
37.376
2
39
37.925
37.701
37.21
36.835
3
39
37.316
37.051
36.252
35.752
4
39
36.702
36.402
35.27
34.67
40
1.5
40
39.226
39.026
38.676
38.376
2
40
38.925
38.701
38.21
37.835
3
40
38.316
38.051
37.252
36.752
42
1.5
42
41.226
41.026
40.676
40.376
2
42
40.925
40.701
40.21
39.835
3
42
40.316
40.051
39.252
38.752
4
42
39.702
39.402
38.27
37.67
4.5
42
39.392
39.077
37.799
37.129
45
1.5
45
44.226
44.026
43.676
43.376
2
45
43.925
43.701
43.21
42.835
3
45
43.316
43.051
42.252
41.752
4
45
42.702
42.402
41.27
40.67
4.5
45
42.392
42.077
40.799
40.129
48
1.5
48
47.238
47.026
46.676
46.376
2
48
46.937
46.701
46.21
45.835
3
48
46.331
46.051
45.252
44.752
4
48
45.717
45.402
44.27
43.67
5
48
45.087
44.752
43.297
42.587
50
1.5
50
49.238
49.026
48.676
48.376
2
50
48.937
48.701
48.21
47.835
3
50
48.331
48.051
47.252
46.752
52
1.5
52
51.238
51.026
50.676
50.376
2
52
50.937
50.701
50.21
49.835
3
52
50.331
50.051
49.252
48.752
4
52
49.717
49.402
48.27
47.67
5
52
49.087
48.752
47.297
46.587
55
1.5
55
54.238
54.026
53.676
53.376
2
55
53.937
53.701
53.21
52.835
3
55
53.331
53.051
52.252
51.752
4
55
52.717
52.402
51.27
50.67
56
1.5
56
55.238
55.026
54.676
54.376
2
56
54.937
54.701
54.21
53.835
3
56
54.331
54.051
53.252
52.752
4
56
53.717
53.402
52.27
51.67
5.5
56
52.783
52.428
50.796
50.046
58
1.5
58
57.238
57.026
56.676
56.376
2
58
56.937
56.701
56.21
55.835
3
58
56.331
56.051
55.252
54.752
4
58
55.717
55.402
54.27
53.67
60
1.5
60
59.238
59.026
58.676
58.376
2
60
58.937
58.701
58.21
57.835
3
60
58.331
58.051
57.252
56.752
4
60
57.717
57.402
56.27
55.67
5.5
60
56.783
56.428
54.796
54.046
62
1.5
62
61.238
61.026
60.676
60.376
2
62
60.937
60.701
60.21
59.835
3
62
60.331
60.051
59.252
58.752
4
62
59.717
59.402
58.27
57.67
64
1.5
64
63.238
63.026
62.676
62.376
2
64
62.937
62.701
62.21
61.835
3
64
62.331
62.051
61.252
60.752
4
64
61.717
61.402
60.27
59.67
6
64
60.478
60.103
58.305
57.505
65
1.5
65
64.238
64.026
63.676
63.376
2
65
63.937
63.701
63.21
62.835
3
65
63.331
63.051
62.252
61.752
4
65
62.717
62.402
61.27
60.67
68
1.5
68
67.238
67.026
66.676
66.376
2
68
66.937
66.701
66.21
65.835
3
68
66.331
66.051
65.252
64.752
4
68
65.717
65.402
64.27
63.67
6
68
64.478
64.103
62.305
61.505
70
1.5
70
69.238
69.026
68.676
68.376
2
70
68.937
68.701
68.21
67.835
3
70
68.331
68.051
67.252
66.752
4
70
67.717
67.402
66.27
65.67
6
70
66.478
66.103
64.305
63.505
72
1.5
72
71.238
71.026
70.676
70.376
2
72
70.937
70.701
70.21
69.835
3
72
70.331
70.051
69.252
68.752
4
72
69.717
69.402
68.27
67.67
6
72
68.478
68.103
66.305
65.505
75
1.5
75
74.238
74.026
73.676
73.376
2
75
73.937
73.701
73.21
72.835
3
75
73.331
73.051
72.252
71.752
4
75
72.717
72.402
71.27
70.67
76
1.5
76
75.238
75.026
74.676
74.376
2
76
74.937
74.701
74.21
73.835
3
76
74.331
74.051
73.252
72.752
4
76
73.717
73.402
72.27
71.67
6
76
72.478
72.103
70.305
69.505
78
2
78
76.937
76.701
76.21
75.835
80
1.5
80
79.238
79.026
78.676
78.376
2
80
78.937
78.701
78.21
77.835
3
80
78.331
78.051
77.252
76.752
4
80
77.717
77.402
76.27
75.67
6
80
76.478
76.103
74.305
73.505
82
2
82
80.937
80.701
80.21
79.835
85
2
85
83.937
83.701
83.21
82.835
3
85
83.331
83.051
82.252
81.752
4
85
82.717
82.402
81.27
80.67
6
85
81.478
81.103
79.305
78.505
90
2
90
88.937
88.701
88.21
87.835
3
90
88.331
88.051
87.252
86.752
4
90
87.717
87.402
86.27
85.67
6
90
86.478
86.103
84.305
83.505
95
2
95
93.951
93.701
93.21
92.835
3
95
93.351
93.051
92.252
91.752
4
95
92.737
92.402
91.27
90.67
6
95
91.503
91.103
89.305
88.505
100
2
100
98.951
98.701
98.21
97.835
3
100
98.351
98.051
97.252
96.752
4
100
97.737
97.402
96.27
95.67
6
100
96.503
96.103
94.305
93.505
105
2
105
103.951
103.701
103.21
102.835
3
105
103.351
103.051
102.252
101.752
4
105
102.737
102.402
101.27
100.67
6
105
101.503
101.103
99.305
98.505
110
2
110
108.951
108.701
108.21
107.835
3
110
108.351
108.051
107.252
106.752
4
110
107.737
107.402
106.27
105.67
6
110
106.503
106.103
104.305
103.505
115
2
115
113.951
113.701
113.21
112.835
3
115
113.351
113.051
112.252
111.752
4
115
112.737
112.402
111.27
110.67
6
115
111.503
111.103
109.305
108.505
120
2
120
118.951
118.701
118.21
117.835
3
120
118.351
118.051
117.252
116.752
4
120
117.737
117.402
116.27
115.67
6
120
116.503
116.103
114.305
113.505
125
2
125
123.951
123.701
123.21
122.835
3
125
123.351
123.051
122.252
121.752
4
125
122.737
122.402
121.27
120.67
6
125
121.503
121.103
119.305
118.505
8
125
120.254
119.804
117.34
116.34
130
2
130
128.951
128.701
128.21
127.835
3
130
128.351
128.051
127.252
126.752
4
130
127.737
127.402
126.27
125.67
6
130
126.503
126.103
124.305
123.505
8
130
125.254
124.804
122.34
121.34
135
2
135
133.951
133.701
133.21
132.835
3
135
133.351
133.051
132.252
131.752
4
135
132.737
132.402
131.27
130.67
6
135
131.503
131.103
129.305
128.505
140
2
140
138.951
138.701
138.21
137.835
3
140
138.351
138.051
137.252
136.752
4
140
137.737
137.402
136.27
135.67
6
140
136.503
136.103
134.305
133.505
8
140
135.254
134.804
132.34
131.34
145
2
145
143.951
143.701
143.21
142.835
3
145
143.351
143.051
142.252
141.752
4
145
142.737
142.402
141.27
140.67
6
145
141.503
141.103
139.305
138.505
150
2
150
148.951
148.701
148.21
147.835
3
150
148.351
148.051
147.252
146.752
4
150
147.737
147.402
146.27
145.67
6
150
146.503
146.103
144.305
143.505
8
150
145.254
144.804
142.34
141.34
155
3
155
153.351
153.051
152.252
151.752
4
155
152.737
152.402
151.27
150.67
6
155
151.503
151.103
149.305
148.505
160
3
160
158.351
158.051
157.252
156.752
4
160
157.737
157.402
156.27
155.67
6
160
156.503
156.103
154.305
153.505
8
160
155.254
154.804
152.34
151.31
165
3
165
163.351
163.051
162.252
161.752
4
165
162.737
162.402
161.27
160.67
6
165
161.503
161.103
159.305
158.505
170
3
170
168.351
168.051
167.252
166.752
4
170
167.737
167.402
166.27
165.67
6
170
166.503
166.103
164.305
163.505
8
170
165.254
164.804
162.34
161.34
175
3
175
173.351
173.051
172.252
171.752
4
175
172.737
172.402
171.27
170.67
6
175
171.503
171.103
169.305
168.505
180
3
180
178.351
178.051
177.252
176.752
4
180
177.737
177.402
176.27
175.67
6
180
176.503
176.103
174.305
173.505
8
180
175.254
174.804
172.34
171.34
185
3
185
183.386
183.051
182.252
181.752
4
185
182.777
182.402
181.27
180.67
6
185
181.528
181.103
179.305
178.505
190
3
190
188.386
188.051
187.252
186.752
4
190
187.777
187.402
186.27
185.67
6
190
186.528
186.103
184.305
183.505
8
190
185.279
184.804
182.34
181.34
195
3
195
193.386
193.051
192.252
191.752
4
195
192.777
192.402
191.27
190.67
6
195
191.528
191.103
189.305
188.505
200
3
200
198.386
198.051
197.252
196.752
4
200
197.777
197.402
196.27
195.67
6
200
196.528
196.103
194.305
193.505
8
200
195.279
194.804
192.34
191.34
205
3
205
203.386
203.051
202.252
201.752
4
205
202.777
202.402
201.27
200.67
6
205
201.528
201.103
199.305
198.505
210
3
210
208.386
208.051
207.252
206.752
4
210
207.777
207.402
206.27
205.67
6
210
206.528
206.103
204.305
203.505
8
210
205.279
204.804
202.34
201.34
215
3
215
213.386
213.051
212.252
211.752
4
215
212.777
212.402
211.27
210.67
6
215
211.528
211.103
209.305
208.505
220
3
220
218.386
218.051
217.252
216.752
4
220
217.777
217.402
216.27
215.67
6
220
216.528
216.103
214.305
213.505
8
220
215.279
214.804
212.34
211.34
225
3
225
223.386
223.051
222.252
221.752
4
225
222.777
222.402
221.27
220.67
6
225
221.528
221.103
219.305
218.505
230
3
230
228.386
228.051
227.252
226.752
4
230
227.777
227.402
226.27
225.67
6
230
226.528
226.103
224.305
223.505
8
230
225.279
224.804
222.34
221.34
235
3
235
233.386
233.051
232.252
231.752
4
235
232.777
232.402
231.27
230.67
6
235
231.528
231.103
229.305
228.505
240
3
240
238.386
238.051
237.252
236.752
4
240
237.777
237.402
236.27
235.67
6
240
236.528
236.103
234.305
233.505
8
240
235.279
234.804
232.34
231.34
245
3
245
243.386
243.051
242.252
241.752
4
245
242.777
242.402
241.27
240.67
6
245
241.528
241.103
239.305
238.505
250
3
250
248.386
248.051
247.252
246.752
4
250
247.777
247.402
246.27
245.67
6
250
246.528
246.103
244.305
243.505
8
250
245.279
244.804
242.34
241.34
255
4
255
252.777
252.402
251.27
250.67
6
255
251.528
251.103
249.305
248.505
260
4
260
257.777
257.402
256.27
255.67
6
260
256.528
256.103
254.305
253.505
8
260
255.279
254.804
252.34
251.34
265
4
265
262.777
262.402
261.27
260.67
6
265
261.528
261.103
259.305
258.505
270
4
270
267.777
267.402
266.27
265.67
6
270
266.528
266.103
264.305
263.505
8
270
265.279
264.804
262.34
261.34
275
4
275
272.777
272.402
271.27
270.67
6
275
271.528
271.103
269.305
268.505
280
4
280
277.777
277.402
276.27
275.67
6
280
276.528
276.103
274.305
273.505
8
280
275.279
274.804
272.34
271.34
285
4
285
282.777
282.402
281.27
280.67
6
285
281.528
281.103
279.305
278.505
290
4
290
287.777
287.402
286.27
285.67
6
290
286.528
286.103
284.305
283.505
8
290
285.279
284.804
282.34
281.34
295
4
295
292.777
292.402
291.27
290.67
6
295
291.528
291.103
289.305
288.505
300
4
300
297.777
297.402
296.27
295.67
6
300
296.528
296.103
294.305
293.505
8
300
295.279
294.804
292.34
291.34
-
Tolerance zone 7H: Table 4 of the limit dimensions of internal threads with a nominal diameter of 3mm~200mm
Table 4 Limit dimensions of 7H internal thread
Nominal diameter
D
pitch
P
Da Jia
Dmin _
Medium diameter
trails
D2min _
D2min _
D 1min
D 1min
3
0.5
3
2.8
2.675
2.639
2.459
3.5
0.6
3.5
3.25
3.11
3.05
2.85
4
0.5
4
3.8
3.675
3.639
3.459
0.7
4
3.695
3.545
3.466
3.242
4.5
0.5
4.5
4.3
4.175
4.139
3.959
0.75
4.5
4.163
4.013
3.924
3.688
5
0.5
5
4.8
4.675
4.639
4.459
0.8
5
4.64
4.48
4.384
4.134
5.5
0.5
5.5
5.3
5.175
5.139
4.959
6
0.75
6
5.683
5.513
5.424
5.188
1
6
5.54
5.35
5.217
4.917
7
0.75
7
6.683
6.513
6.424
6.188
1
7
6.54
6.35
6.217
5.917
8
0.75
8
7.683
7.513
7.424
7.188
1
8
7.54
7.35
7.217
6.917
1.25
8
7.388
7.188
6.982
6.647
9
0.75
9
8.683
8.513
8.424
8.188
1
9
8.54
8.35
8.217
7.917
1.25
9
8.388
8.188
7.982
7.647
10
0.75
10
9.683
9.513
9.424
9.188
1
10
9.54
9.35
9.217
8.917
1.25
10