GB /T 15756 – 2008
Limit dimensions of ordinary threads GB/T 15756-2008
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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
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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
9.388
9.188
8.982
8.647
1.5
10
9.25
9.026
8.751
8.376
11
0.75
11
10.683
10.513
10.424
10.188
1
11
10.54
10.35
10.217
9.917
1.5
11
10.25
10.026
9.751
9.376
12
1
12
11.55
11.35
11.217
10.917
1.25
12
11.412
11.188
10.982
10.647
1.5
12
11.262
11.026
10.751
10.376
1.75
12
11.113
10.863
10.531
10.106
14
1
14
13.55
13.35
13.217
12.917
1.5
14
13.262
13.026
12.751
12.376
2
14
12.966
12.701
12.31
11.835
15
1
15
14.55
14.35
14.217
13.9175
1.5
15
14.262
14.026
13.751
13.376
16
1
16
15.55
15.35
15.217
14.917
1.5
16
15.262
15.026
14.751
14.376
2
16
14.966
14.701
14.31
13.835
17
1
17
16.55
16.35
16.217
15.917
1.5
17
16.262
16.026
15.751
15.376
18
1
18
17.55
17.35
17.217
16.917
1.5
18
17.262
17.026
16.751
16.376
2
18
16.966
16.701
16.31
15.835
2.5
18
16.656
16.376
15.854
15.294
20
1.5
20
19.262
19.026
18.751
18.376
2
20
18.966
18.701
18.31
17.835
2.5
20
18.656
18.376
17.854
17.294
22
1
22
21.55
21.35
21.217
20.917
1.5
22
21.262
21.026
20.751
20.376
2
22
20.966
20.701
20.31
19.835
2.5
22
20.656
20.376
19.854
19.294
24
1
24
23.562
23.35
23.217
22.917
1.5
24
23.276
23.026
22.751
22.376
2
24
22.981
22.701
22.31
21.835
3
24
22.386
22.051
21.382
20.752
25
1
25
24.562
24.35
24.217
23.917
1.5
25
24.276
24.026
23.751
23.376
2
25
23.981
23.701
23.31
22.835
26
1.5
26
25.276
25.026
24.751
24.376
27
1
27
26.562
26.35
26.217
25.917
1.5
27
26.276
26.026
25.751
25.376
2
27
25.981
25.701
25.31
24.835
3
27
25.386
25.051
24.382
23.752
28
1
28
27.562
27.35
27.217
26.917
1.5
28
27.276
27.026
26.751
26.376
2
28
26.981
26.701
26.31
25.835
30
1
30
29.562
29.35
29.217
28.917
1.5
30
29.276
29.026
28.751
28.376
2
30
28.981
28.701
28.31
27.835
3
30
28.386
28.051
27.382
26.752
3.5
30
28.082
27.727
26.921
26.211
32
1.5
32
31.276
31.026
30.751
30.376
2
32
30.981
30.701
30.31
29.835
33
1.5
33
32.276
32.026
31.751
31.376
2
33
31.981
31.701
31.31
30.835
3
33
31.386
31.051
30.382
29.752
3.5
33
31.082
30.727
29.921
29.211
36
1.5
36
35.276
35.026
34.751
34.376
2
36
34.981
34.701
34.31
33.835
3
36
374.386
34.051
33.382
32.752
4
36
33.777
33.402
32.42
31.67
38
1.5
38
37.276
37.026
36.751
36.376
39
1.5
39
38.276
38.026
37.751
37.376
2
39
37.981
37.701
37.31
36.835
3
39
37.386
37.051
36.382
35.752
4
39
36.777
36.402
35.42
34.67
40
1.5
40
39.276
39.026
38.751
38.376
2
40
38.981
38.701
38.31
37.835
3
40
38.386
38.051
37.382
36.752
42
1.5
42
41.276
41.026
40.751
40.376
2
42
40.981
40.701
40.31
39.835
3
42
40.386
40.051
39.382
38.752
4
42
39.777
39.402
38.42
37.67
4.5
42
39.477
39.077
37.979
37.129
45
1.5
45
44.276
44.026
43.751
43.376
2
45
43.981
43.701
43.31
42.835
3
45
43.386
43.051
42.382
41.752
4
45
42.777
42.402
41.42
40.67
4.5
45
42.477
42.077
40.979
40.129
48
1.5
48
47.291
47.026
46.751
46.376
2
48
47.001
46.701
46.31
45.835
3
48
46.406
46.051
45.382
44.752
4
48
45.802
45.402
44.42
43.67
5
48
45.177
44.752
43.487
42.587
50
1.5
50
49.291
49.026
48.751
48.376
2
50
49.001
48.701
48.31
47.835
3
50
48.406
48.051
47.382
46.752
52
1.5
52
51.291
51.026
50.751
50.376
2
52
51.001
50.701
50.31
49.835
3
52
50.406
50.051
49.382
48.752
4
52
49.802
49.402
48.42
47.67
5
52
49.177
48.752
47.487
46.587
55
1.5
55
54.291
54.026
53.751
53.376
2
55
54.001
53.701
53.31
52.835
3
55
53.406
53.051
52.382
51.752
4
55
52.802
52.402
51.42
50.67
56
1.5
56
55.291
55.026
54.751
54.376
2
56
55.001
54.701
54.31
53.835
3
56
54.406
54.051
53.382
52.752
4
56
53.802
53.402
52.42
51.67
5.5
56
52.878
52.428
50.996
50.046
58
1.5
58
57.291
57.026
56.751
56.376
2
58
57.001
56.701
56.31
55.835
3
58
56.406
56.051
55.382
54.752
4
58
55.802
55.402
54.42
53.67
60
1.5
60
59.201
59.026
58.751
58.376
2
60
59.001
58.701
58.31
57.835
3
60
58.406
58.051
57.382
56.752
4
60
57.802
57.402
56.42
55.67
5.5
60
56.878
56.428
54.996
54.046
62
1.5
62
61.291
61.026
60.751
60.376
2
62
61.001
60.701
60.31
59.835
3
62
60.406
60.051
59.382
58.752
4
62
59.802
59.402
58.42
57.67
64
1.5
64
63.291
63.026
62.751
62.376
2
64
63.001
62.701
62.31
61.835
3
64
62.406
62.051
61.382
60.752
4
64
61.802
61.402
60.42
59.67
6
64
60.578
60.103
58.505
57.505
65
1.5
65
64.291
64.026
63.751
63.376
2
65
64.001
63.701
63.31
62.835
3
65
63.406
63.051
62.382
61.752
4
65
62.802
62.402
61.42
60.67
68
1.5
68
67.291
67.026
66.751
66.376
2
68
67.001
66.701
66.31
65.835
3
68
66.406
66.051
65.382
64.752
4
68
65.802
65.402
64.42
63.67
5
68
64.578
64.103
62.505
61.505
70
1.5
70
69.291
69.026
68.751
68.376
2
70
69.001
68.701
68.31
67.835
3
70
68.406
68.051
67.382
66.752
4
70
67.802
67.402
66.42
65.67
6
70
66.578
66.103
64.505
63.505
72
1.5
72
71.291
71.026
70.751
70.376
2
72
71.001
70.701
70.31
69.835
3
72
70.406
70.051
69.382
68.752
4
72
69.802
69.402
68.42
67.67
6
72
68.578
68.103
66.505
65.505
75
1.5
75
74.291
74.026
73.751
73.376
2
75
74.001
73.701
73.31
72.835
3
75
73.406
73.051
72.382
71.752
4
75
72.802
72.402
71.42
70.67
76
1.5
76
75.291
75.026
74.751
74.376
2
76
75.001
74.701
74.31
73.835
3
76
74.406
74.051
73.382
72.752
4
76
73.802
73.402
72.42
71.67
6
76
72.578
72.103
70.505
69.505
78
2
78
77.001
76.701
76.31
75.835
80
1.5
80
79.291
79.026
78.751
78.376
2
80
79.001
78.701
78.31
77.835
3
80
78.406
78.051
77.382
76.752
4
80
77.802
77.402
76.42
75.67
6
80
76.578
76.103
74.505
73.505
82
2
82
81.001
80.701
80.31
79.835
85
2
85
84.001
83.701
83.31
82.835
3
85
83.406
83.051
82.382
81.752
4
85
82.802
82.402
81.42
80.67
6
85
81.578
81.103
79.505
78.505
90
2
90
89.001
88.701
88.31
87.835
3
90
88.406
88.051
87.382
86.752
4
90
87.802
87.402
86.42
85.67
6
90
86.578
86.103
84.505
83.505
95
2
95
94.016
93.701
93.31
92.835
3
95
93.426
93.051
92.382
91.752
4
95
92.827
92.402
91.42
90.67
6
95
91.603
91.103
89.505
88.505
100
2
100
99.016
98.701
98.31
97.835
3
100
98.426
98.051
97.382
96.752
4
100
97.827
97.402
96.42
95.67
6
100
96.603
96.103
94.505
93.505
105
2
105
104.016
103.701
103.31
102.835
3
105
103.426
103.051
102.382
101.752
4
105
102.827
102.402
101.42
100.67
6
105
101.603
101.103
99.505
98.505
110
2
110
109.016
108.701
108.31
107.835
3
110
108.426
108.051
107.382
106.752
4
110
107.827
107.402
106.42
105.67
6
110
106.603
106.103
104.505
103.505
115
2
115
114.016
113.701
113.31
112.835
3
115
113.426
113.051
112.382
111.752
4
115
112.827
112.402
111.42
110.67
6
115
111.603
111.103
109.505
108.505
120
2
120
119.016
118.701
118.31
117.835
3
120
118.426
118.051
117.382
116.752
4
120
117.827
117.402
116.42
115.67
6
120
116.603
116.103
114.505
113.505
125
2
125
124.016
123.701
123.31
122.835
3
125
123.426
123.051
122.382
121.752
4
125
122.827
122.402
121.42
120.67
6
125
121.603
121.103
119.505
118.505
8
125
120.364
119.804
117.59
116.34
130
2
130
129.016
128.701
128.31
127.835
3
130
128.426
128.051
127.382
126.752
4
130
127.827
127.402
126.42
125.67
6
130
126.603
126.103
124.505
123.505
8
130
125.364
124.804
122.59
121.34
135
2
135
134.016
133.701
133.31
132.835
3
135
133.426
133.051
132.382
131.752
4
135
132.827
132.402
131.42
130.67
6
135
131.603
131.103
129.505
128.505
140
2
140
139.016
138.701
138.31
137.835
3
140
138.426
138.051
137.382
136.752
4
140
137.827
137.402
136.42
135.67
6
140
136.603
136.103
134.505
133.505
8
140
135.364
134.804
132.59
131.34
145
2
145
144.016
143.701
143.31
142.835
3
145
143.426
143.051
142.382
141.752
4
145
142.827
142.402
141.42
140.67
6
145
141.603
141.103
139.505
138.505
150
2
150
149.016
148.701
148.31
147.835
3
150
148.426
148.051
147.382
146.752
4
150
147.827
147.402
146.42
145.67
6
150
146.603
146.103
144.505
143.505
8
150
145.364
144.804
142.59
141.34
155
3
155
153.426
153.051
152.382
151.752
4
155
152.827
152.402
151.42
150.67
6
155
151.603
151.103
149.505
148.505
160
3
160
158.426
158.051
157.382
156.752
4
160
157.827
157.402
156.42
155.67
6
160
156.603
156.103
154.505
153.505
8
160
155.364
154.804
152.59
151.34
165
3
165
163.426
163.051
162.382
161.752
4
165
162.827
162.402
161.42
160.67
6
165
161.603
161.103
159.505
158.505
170
3
170
168.426
168.051
167.382
166.752
4
170
167.827
167.402
166.42
165.67
6
170
166.603
166.103
164.505
163.505
8
170
165.364
164.804
162.59
161.34
175
3
175
173.426
173.051
172.382
171.752
4
175
172.827
172.402
171.42
170.67
6
175
171.603
171.103
169.505
168.505
180
3
180
178.426
178.051
177.382
176.752
4
180
177.827
177.402
176.42
175.67
6
180
176.603
176.103
174.505
173.505
8
180
175.364
174.804
172.59
171.34
185
3
185
183.476
183.051
182.382
181.752
4
185
182.877
182.402
181.42
180.67
6
185
181.633
181.103
179.505
178.505
190
3
190
188.476
188.051
187.382
186.752
4
190
187.877
187.402
186.42
185.67
6
190
186.633
186.103
184.505
183.505
8
190
185.404
184.804
182.59
181.34
195
3
195
193.476
193.051
192.382
191.752
4
195
192.877
192.402
191.42
190.67
6
195
191.633
191.103
189.505
188.505
200
3
200
198.476
198.051
197.382
196.752
4
200
197.877
197.402
196.42
195.67
6
200
196.633
196.103
194.505
193.505
8
200
195.404
194.804
192.59
191.34
-
Tolerance zone 6G: Table 5 of the limit dimensions of internal threads with a nominal diameter of 1.4mm~200mm
Table 5 Limit dimensions of 6G internal thread
Nominal diameter
D
pitch
P
Da Jia
Dmin _
Medium diameter
trails
D2max _
D2min _
D 1ax
D 1in
1.4
0.3
1.418
1.298
1.223
1.178
1.093
1.6
0.35
1.619
1.477
1.392
1.34
1.24
1.8
0.35
1.819
1.677
1.592
1.54
1.44
2
0.4
2.019
1.849
1.759
1.698
1.586
2.2
0.45
2.22
2.023
1.928
1.858
1.733
2.5
0.35
2.519
2.377
2.292
2.24
2.14
0.45
2.52
2.323
2.228
2.158
2.033
3
0.35
3.019
2.882
2.792
2.74
2.64
0.5
3.020
2.795
2.695
2.619
2.479
3.5
0.35
3.519
3.382
3.292
3.24
3.14
0.6
3.521
3.243
3.131
3.031
2.871
4
0.5
4.02
3.795
3.695
3.619
3.479
0.7
4.022
3.685
3.567
3.444
3.264
4.5
0.5
4.52
4.295
4.195
4.119
3.979
0.75
4.522
4.153
4.035
3.9
3.71
5
0.5
5.02
4.795
4.695
4.619
4.479
0.8
5.024
4.629
4.504
4.358
4.158
5.5
0.5
5.52
5.295
5.195
5.119
4.979
6
0.75
6.022
5.667
5.535
5.4
5.21
1
6.026
5.526
5.376
5.179
4.943
7
0.75
7.022
6.667
6.535
6.4
6.21
1
7.026
6.526
6.376
6.179
5.943
8
0.75
8.022
7.667
7.535
7.4
7.21
1
8.026
7.526
7.376
7.179
6.943
1.25
8.028
7.376
7.216
6.94
6.675
9
0.75
9.022
8.667
8.535
8.4
8.21
1
9.026
8.526
8.376
8.179
7.943
1.25
9.028
8.376
8.216
7.94
7.675
10
0.75
10.022
9.667
9.535
9.4
9.21
1
10.026
9.526
9.376
9.179
8.943
1.25
10.028
9.376
9.216
8.94
8.675
1.5
10.032
9.238
9.058
8.708
8.408
11
0.75
11.022
10.667
10.535
10.4
10.21
1
11.026
10.526
10.376
10.179
9.943
1.5
11.032
10.238
10.058
9.708
9.408
12
1
12.026
11.536
11.376
11.179
10.943
1.25
12.028
11.396
11.216
10.94
10.675
1.5
12.032
11.248
11.058
10.708
10.408
1.75
12.034
11.097
10.897
10.475
10.14
14
1
14.026
13.536
13.376
13.179
12.943
1.5
14.032
13.248
13.058
12.708
12.408
2
14.038
12.951
12.739
12.248
11.873
15
1
15.026
14.536
14.376
14.179
13.943
1.5
15.032
14.248
14.058
13.708
13.408
16
1
16.026
15.536
15.376
15.179
14.943
1.5
16.032
15.248
15.058
14.708
14.408
2
16.038
14.951
14.739
14.248
13.873
17
1
17.026
16.536
16.376
16.179
15.943
1.5
17.032
16.248
16.058
15.708
15.408
18
1
18.026
17.536
17.376
17.179
16.943
1.5
18.032
17.248
17.058
16.708
16.408
2
18.038
16.951
16.739
16.248
15.873
2.5
18.042
16.642
16.418
15.786
15.336
20
1
20.026
19.536
19.376
19.179
18.943
1.5
20.032
19.248
19.058
18.708
18.408
2
20.038
18.951
18.739
18.248
17.873
2.5
20.042
18.642
18.418
17.786
17.336
22
1
22.026
21.536
21.376
21.179
20.943
1.5
22.032
21.248
21.058
20.708
20.408
2
22.038
20.951
20.739
20.248
19.873
2.5
22.042
20.642
20.418
19.786
19.336
24
1
24.026
23.546
23.376
23.179
22.943
1.5
24.032
23.258
23.058
22.708
22.408
2
24.038
22.963
22.739
22.248
21.873
3
24.048
22.364
22.099
21.3
20.8
25
1
25.026
24.546
24.376
24.179
23.943
1.5
25.032
24.258
24.058
23.708
23.408
2
25.038
23.963
23.739
23.248
22.873
26
1.5
26.032
25.258
25.058
24.708
24.408
27
1
27.026
26.546
26.376
26.179
25.943
1.5
27.032
26.258
26.058
25.708
25.408
2
27.038
25.963
25.739
25.248
24.873
3
27.048
25.364
25.099
24.3
23.8
28
1
28.026
27.546
27.376
27.179
26.943
1.5
28.032
27.258
27.058
26.708
26.408
2
28.038
26.963
26.739
26.248
25.873
30
1
30.026
29.546
29.376
29.179
28.943
1.5
30.032
29.258
29.058
28.708
28.408
2
30.038
28.963
28.739
28.248
27.873
3
30.048
28.364
28.099
27.3
26.8
35
30.053
28.06
27.78
26.824
26.264
32
1.5
32.032
31.258
31.058
30.708
30.408
2
32.038
30.963
30.739
30.248
29.873
33
1.5
33.032
32.258
32.058
31.708
31.408
2
33.038
31.963
31.739
31.248
30.873
3
33.048
31.364
31.099
30.3
29.8
3.5
33.053
31.06
30.78
29.824
29.264
36
1.5
36.032
35.258
35.058
34.708
34.408
2
36.038
34.963
34.739
34.248
33.873
3
36.048
34.364
34.099
33.3
32.8
4
36.06
33.762
33.462
32.33
31.73
38
1.5
38.032
37.258
37.058
36.708
36.408
39
1.5
39.032
38.258
38.058
37.708
37.408
2
39.038
37.963
37.739
37.248
36.873
3
39.048
37.364
37.099
36.3
35.8
4
39.06
36.762
36.462
35.33
34.73
40
1.5
40.032
39.258
39.058
38.708
38.408
2
40.038
38.963
38.739
38.248
37.873
3
40.048
38.364
38.099
37.3
36.8
42
1.5
42.032
41.258
41.058
40.708
40.408
2
42.038
40.963
40.739
40.248
39.873
3
42.048
40.364
40.099
39.3
38.8
4
42.06
39.762
39.462
38.33
37.73
4.5
42.063
39.455
39.14
37.862
37.192
45
1.5
45.032
44.258
44.058
43.708
43.408
2
45.038
43.963
43.739
43.248
42.873
3
45.048
43.364
43.099
42.3
41.8
4
45.06
42.762
42.462
41.33
40.73
4.5
45.063
42.455
42.14
40.862
40.192
48
1.5
48.032
47.27
47.058
46.708
46.408
2
48.038
46.975
46.739
46.248
45.873
3
48.048
46.379
46.099
45.3
44.8
4
48.06
45.777
45.462
44.33
43.73
5
48.071
45.158
44.823
43.368
42.658
50
1.5
50.032
49.27
49.058
48.708
48.408
2
50.038
48.975
48.739
48.248
47.873
3
50.048
48.379
48.099
47.3
46.8
52
1.5
52.032
51.27
51.058
50.708
50.408
2
52.038
50.975
50.739
50.248
49.873
3
52.048
50.379
50.099
49.3
48.8
4
52.06
49.777
49.462
48.33
47.73
5
52.071
49.158
48.823
47.368
46.658
55
1.5
55.032
54.27
54.058
53.708
53.408
2
55.038
53.975
53.739
53.248
52.873
3
55.048
53.379
53.099
52.3
51.8
4
55.06
52.777
52.462
51.33
50.73
56
1.5
56.032
55.27
55.058
54.708
54.408
2
56.038
54.975
54.739
54.248
53.873
3
56.048
54.379
54.099
53.3
52.8
4
56.06
53.777
53.462
52.33
51.73
5.5
56.075
52.858
52.503
50.871
50.121
58
1.5
58.032
57.27
57.058
56.708
56.408
2
58.038
56.975
56.739
56.248
55.873
3
58.048
56.379
56.099
55.3
54.8
4
58.06
55.777
55.462
54.33
53.73
60
1.5
60.032
59.27
59.058
58.708
58.408
2
60.038
58.975
58.739
58.248
57.873
3
60.048
58.379
58.099
57.3
56.8
4
60.06
57.777
57.462
56.33
55.73
5.5
60.075
56.858
56.503
54.871
54.121
62
1.5
62.032
61.27
61.058
60.708
60.408
2
62.038
60.975
60.739
60.248
59.873
3
62.048
60.379
60.099
59.3
58.8
4
62.06
59.777
59.462
58.33
57.73
64
1.5
64.032
63.27
63.058
62.708
62.408
2
64.038
62.975
62.739
62.248
61.873
3
64.048
62.379
62.099
61.3
60.8
4
64.06
61.777
61.462
60.33
59.73
6
64.08
60.558
60.183
58.385
57.585
65
1.5
65.032
64.27
64.058
63.708
63.408
2
65.038
63.975
63.739
63.248
62.873
3
65.048
63.379
63.099
62.3
61.8
4
65.060
62.777
62.462
61.33
60.73
68
1.5
68.032
67.27
67.058
66.708
66.408
2
68.038
66.975
66.739
66.248
65.873
3
68.048
66.379
66.099
65.3
64.8
4
68.06
65.777
65.462
64.33
63.73
6
68.08
64.558
64.183
62.385
61.585
70
1.5
70.032
69.27
69.058
68.708
68.408
2
70.038
68.975
68.739
68.248
67.873
3
70.048
68.379
68.099
67.3
66.8
4
70.06
67.777
67.462
66.33
65.73
6
70.08
66.558
66.183
64.385
63.585
72
1.5
72.032
71.27
71.058
70.708
70.408
2
72.038
70.975
70.739
70.248
69.873
3
72.048
70.379
70.099
69.3
68.8
4
72.06
69.777
69.462
68.33
67.73
6
72.08
68.558
68.183
66.385
65.585
75
1.5
75.032
74.27
74.058
73.708
73.408
2
75.038
73.975
73.739
73.248
72.873
3
75.048
73.379
73.099
72.3
71.8
4
75.06
72.777
72.462
71.33
70.73
76
1.5
76.032
75.27
75.058
74.708
74.408
2
76.038
74.975
74.739
74.248
73.873
3
76.048
74.379
74.099
73.3
72.8
4
76.06
73.777
73.462
72.33
71.73
6
76.08
72.558
72.183
70.385
69.585
78
2
78.038
76.975
76.739
76.248
75.873
80
1.5
80.032
79.27
79.058
78.708
78.408
2
80.038
78.975
78.739
78.248
77.873
3
80.048
78.379
78.099
77.3
76.8
4
80.06
77.777
77.462
76.33
75.73
6
80.08
76.558
76.183
74.385
73.585
82
2
82.038
80.975
80.739
80.248
79.873
85
2
85.038
83.975
83.739
83.248
82.873
3
85.048
83.379
83.099
82.3
81.8
4
85.06
82.777
82.462
81.33
80.73
6
85.08
81.558
81.183
79.385
78.585
90
2
90.038
88.975
88.739
88.248
87.873
3
90.048
88.379
88.099
87.3
86.8
4
90.06
87.777
87.462
86.33
85.73
6
90.08
86.558
86.183
84.385
83.585
95
2
95.038
93.989
93.739
93.248
92.873
3
95.048
93.399
93.099
92.3
91.8
4
95.06
92.797
92.462
91.33
90.73
6
95.08
91.583
91.183
89.385
88.585
100
2
100.038
98.989
98.739
98.248
97.873
3
100.048
98.399
98.099
97.3
96.8
4
100.06
97.797
97.462
96.33
95.73
6
100.08
96.583
96.183
94.385
93.585
105
2
105.038
103.989
103.739
103.248
102.873
3
105.048
103.399
103.099
102.3
101.8
4
105.06
102.797
102.462
101.33
100.73
6
105.08
101.583
101.183
99.385
98.585
110
2
110.038
108.989
108.739
108.248
107.873
3
110.048
108.399
108.099
107.3
106.8
4
110.06
107.797
107.462
106.33
105.73
6
110.08
106.583
106.183
104.385
103.585
115
2
115.038
113.989
113.739
113.248
112.873
3
115.048
113.399
113.099
112.3
111.8
4
115.06
112.797
112.462
111.33
110.73
6
115.08
111.583
111.183
109.385
108.585
120
2
120.038
118.989
118.739
118.248
117.873
3
120.048
118.399
118.099
117.3
116.8
4
120.06
117.797
117.462
116.33
115.73
6
120.08
116.583
116.183
114.385
113.585
125
2
125.038
123.989
123.739
123.248
122.873
3
125.048
123.399
123.099
122.3
121.8
4
125.06
122.797
122.462
121.33
120.73
6
125.08
121.583
121.183
119.385
118.585
8
125.1
120.354
119.904
117.44
116.44
130
2
130.038
128.989
128.739
128.248
127.873
3
130.048
128.399
128.099
127.3
126.8
4
130.06
127.797
127.462
126.33
125.73
6
130.08
126.583
126.183
124.385
123.585
8
130.1
125.354
124.904
122.44
121.44
135
2
135.038
133.989
133.739
133.248
132.873
3
135.048
133.399
133.099
132.3
131.8
4
135.06
132.797
132.462
131.33
130.73
6
135.08
131.583
131.183
129.385
128.585
140
2
140.038
138.989
138.739
138.248
137.873
3
140.048
138.399
138.099
137.3
136.8
4
140.06
137.797
137.462
136.33
135.73
6
140.08
136.583
136.183
134.385
133.585
8
140.1
135.354
134.904
132.44
131.44
145
2
145.038
143.989
143.739
143.248
142.873
3
145.048
143.399
143.099
142.3
141.8
4
145.06
142.797
142.462
141.33
140.73
6
145.08
141.583
141.183
139.385
138.585
150
2
150.038
148.989
148.739
148.248
147.873
3
150.048
148.399
148.099
147.3
146.8
4
150.06
147.797
147.462
146.33
145.73
6
150.08
146.583
146.183
144.385
143.585
8
150.1
145.354
144.904
142.44
141.44
155
3
155.048
153.399
153.099
152.3
151.8
4
155.06
152.797
152.462
151.33
150.73
6
155.08
151.583
151.183
149.385
148.585
160
3
160.048
158.399
158.099
157.3
156.8
4
160.06
157.797
157.462
156.33
155.73
6
160.08
156.583
156.183
154.385
153.585
8
160.1
155.354
154.904
152.44
151.44
165
3
165.048
163.399
163.099
162.3
161.8
4
165.06
162.797
162.462
161.33
160.73
6
165.08
161.583
161.183
159.385
158.585
170
3
170.048
168.399
168.099
167.3
166.8
4
170.06
167.797
167.462
166.33
165.73
6
170.08
166.583
166.183
164.385
163.585
8
170.1
165.354
164.904
162.44
161.44
175
3
175.048
173.399
173.099
172.3
171.8
4
175.06
172.797
172.462
171.33
170.73
6
175.08
171.583
171.183
169.385
168.585
180
3
180.048
178.399
178.099
177.3
176.8
4
180.06
177.797
177.462
176.33
175.73
6
180.08
176.583
176.183
174.385
173.585
8
180.1
175.354
174.904
172.44
171.44
185
3
185.048
183.434
183.099
182.3
181.8
4
185.06
182.837
182.462
181.33
180.73
6
185.08
181.608
181.183
179.385
178.585
190
3
190.048
188.434
188.099
187.3
186.8
4
190.06
187.837
187.462
186.33
185.73
6
190.08
186.608
186.183
184.385
183.585
8
190.1
185..379
184.904
182.44
181.44
195
3
195.048
193.434
193.099
192.3
191.8
4
195.06
192.837
192.462
191.33
190.73
6
195.08
191.608
191.183
189.385
188.585
200
3
200.048
198.434
198.099
197.3
196.8
4
200.06
197.837
197.462
196.33
195.73
6
200.08
196.608
196.183
194.385
193.585
8
200.1
195.379
194.904
192.44
191.44
-
4h: Table 6 of the limit dimensions of external threads with a nominal diameter of 1~100mm
Table 6 Limit dimensions of 4h external thread
Nominal diameter
d
pitch
P
Da Jia
Medium diameter
trails
(refer to)
d3max _
dmax _
dmin _
d2max _
d 2min
1
0.2
1
0.964
0.87
0.84
0.755
0.25
1
0.958
0.838
0.804
0.693
1.1
0.2
1.1
1.064
0.97
0.94
0.855
0.25
1.1
1.058
0.938
0.904
0.793
1.2
0.2
1.2
1.164
1.07
1.04
0.955
0.25
1.2
1.158
1.038
1.004
0.893
1.4
0.2
1.4
1.364
1.27
1.24
1.155
0.3
1.4
1.352
1.205
1.169
1.032
1.6
0.2
1.6
1.564
1.47
1.438
1.355
0.35
1.6
1.547
1.373
1.333
1.171
1.8
0.2
1.8
1.764
1.67
1.638
1.555
0.35
1.8
1.747
1.573
1.533
1.371
2
0.25
2
1.958
1.838
1.802
1.693
0.4
2
1.94
1.74
1.698
1.509
2.2
0.25
2.2
2.158
2.038
2.002
1.893
0.45
2.2
2.137
1.908
1.863
1.648
2.5
0.35
2.5
2.447
2.273
2.233
2.071
0.45
2.5
2.437
2.208
2.163
1.948
3
0.35
3
2.947
2.773
2.731
2.571
0.5
3
2.933
2.675
2.627
2.387
3.5
0.35
3.5
3.447
3.273
3.231
3.071
0.6
3.5
3.42
3.11
3.057
2.764
4
0.5
4
3.933
3.675
3.627
3.387
0.7
4
3.91
3.545
3.489
3.141
4.5
0.5
4.5
4.433
4.175
4.127
3.887
0.75
4.5
4.41
4.013
3.957
3.58
5
0.5
5
4.933
4.675
4.627
4.387
0.8
5
4.905
4.48
4.42
4.019
5.5
0.5
5.5
5.433
5.175
5.127
4.887
6
0.75
6
5.91
5.513
5.45
5.08
1
6
5.888
5.35
5.279
4.773
7
0.75
7
6.91
6.513
6.45
6.08
1
7
6.888
6.35
6.279
5.773
8
0.75
8
7.91
7.513
7.45
7.08
1
8
7.888
7.35
7.279
6.773
1.25
8
7.868
7.188
7.113
6.466
9
0.75
9
8.91
8.513
8.45
8.08
1
9
8.888
8.35
8.279
7.773
1.25
9
8.868
8.188
8.113
7.466
10
0.75
10
9.91
9.513
9.45
9.08
1
10
9.888
9.35
9.279
8.773
1.25
10
9.868
9.188
9.113
8.466
1.5
10
9.85
9.026
8.941
8.16
11
0.75
11
10.91
10.513
10.45
10.08
1
11
10.888
10.35
10.279
9.773
1.5
11
10.85
10.026
9.941
9.16
12
1
12
11.888
11.35
11.275
10.773
1.25
12
11.868
11.188
11.103
10.466
1.5
12
11.85
11.026
10.936
10.16
1.75
12
11.83
10.863
10.768
9.853
14
1
14
13.888
13.35
13.275
12.773
1.5
14
13.85
13.026
12.936
12.16
2
14
13.82
12.701
12.601
11.546
15
1
15
14.888
14.35
14.275
13.773
1.5
15
14.85
14.026
13.936
13.16
16
1
16
15.888
15.35
15.275
14.773
1.5
16
15.85
15.026
14.936
14.16
2
16
15.82
14.701
14.601
13.546
17
1
17
16.888
16.35
16.275
15.773
1.5
17
16.85
16.026
15.936
15.16
18
1
18
17.888
17.35
17.275
16.773
1.5
18
17.85
17.026
16.936
16.16
2
18
17.82
16.701
16.601
15.546
2.5
18
17.788
16.376
16.270
14.933
20
1
20
19.888
19.35
19.275
18.773
1.5
20
19.85
19.026
18.936
18.16
2
20
19.82
18.701
18.601
17.546
2.5
20
19.788
18.376
18.27
16.933
22
1
22
21.888
21.35
21.275
20.773
1.5
22
21.85
21.026
20.936
20.16
2
22
21.82
20.701
20.601
19.546
2.5
22
21.788
20.376
20.27
18.933
24
1
24
23.888
23.35
23.27
22.773
1.5
24
23.85
23.026
22.931
22.16
2
24
23.82
22.701
22.595
21.546
3
24
23.764
22.051
21.926
20.319
25
1
25
24.888
24.35
24.27
23.773
1.5
25
24.85
24.026
23.931
23.16
2
25
24.82
23.701
23.595
22.546
26
1.5
26
25.85
25.026
24.931
24.160
27
1
27
26.888
26.35
26.27
25.773
1.5
27
26.85
26.026
25.931
25.16
2
27
26.82
25.701
25.595
24.546
3
27
26.764
25.051
24.926
23.319
28
1
28
27.888
27.35
27.27
26.773
1.5
28
27.85
27.026
26.931
26.16
2
28
27.82
26.701
26.595
25.546
30
1
30
29.888
29.35
29.27
28.773
1.5
30
29.85
29.026
28.931
28.16
2
30
29.82
28.701
28.595
27.546
3
30
29.764
28.051
27.926
26.319
3.5
30
29.735
27.727
27.595
25.706
32
1.5
32
31.85
31.026
30.931
30.16
2
32
31.82
30.701
30.595
29.546
33
1.5
33
32.85
32.026
31.931
31.16
2
33
32.82
31.701
31.595
30.546
3
33
32.764
31.051
30.926
29.319
3.5
33
32.735
30.727
30.595
28.706
36
1.5
36
35.85
35.026
34.931
34.16
2
36
35.82
34.701
34.595
33.546
3
36
35.764
34.051
33.926
32.319
4
36
35.7
33.402
33.262
31.093
38
1.5
38
37.85
37.026
36.931
36.16
39
1.5
39
38.85
38.026
37.931
37.16
2
39
38.82
37.701
37.595
36.546
3
39
38.764
37.051
36.926
35.319
4
39
38.7
36.402
36.262
34.093
40
1.5
40
39.85
39.026
38.931
38.16
2
40
39.82
38.701
38.595
37.546
3
40
39.764
38.051
37.926
36.319
42
1.5
42
41.85
41.026
40.931
40.16
2
42
41.82
40.701
40.595
39.546
3
42
41.764
40.051
39.926
38.319
4
42
41.7
39.402
39.262
37.093
4.5
42
41.685
39.077
38.927
36.479
45
1.5
45
44.85
44.026
43.931
43.16
2
45
44.82
43.701
43.595
42.546
3
45
44.764
43.051
42.926
41.319
4
45
44.7
42.402
42.262
40.093
4.5
45
44.685
42.077
41.927
39.479
48
1.5
48
47.85
47.026
46.926
46.16
2
48
47.82
46.701
46.589
45.546
3
48
47.764
46.051
45.919
44.319
4
48
47.7
45.402
45.252
43.093
5
48
47.665
44.752
44.592
41.866
50
1.5
50
49.85
49.026
48.926
48.16
2
50
49.82
48.701
48.589
47.546
3
50
49.764
48.051
47.919
46.319
52
1.5
52
51.85
51.026
50.926
50.16
2
52
51.82
50.701
50.589
49.546
3
52
51.764
50.051
49.919
48.319
4
52
51.7
49.402
49.252
47.093
5
52
51.665
48.752
48.592
45.866
55
1.5
55
54.85
54.026
53.926
53.16
2
55
54.82
53.701
53.589
52.546
3
55
54.764
53.051
52.919
51.319
4
55
54.7
52.402
52.252
50.093
56
1.5
56
55.85
55.026
54.926
54.16
2
56
55.82
54.701
54.589
53.546
3
56
55.764
54.051
53.919
52.319
4
56
55.7
53.402
53.252
51.093
5.5
56
55.645
52.428
52.258
49.252
1.5
58
57.85
57.026
56.926
56.16
2
58
57.82
56.701
56.589
55.546
3
58
57.764
56.051
55.919
54.319
4
58
57.7
55.402
55.252
53.093
1.5
60
59.85
59.026
58.926
58.16
2
60
59.82
58.701
58.589
57.546
3
60
59.764
58.051
57.919
56.319
4
60
59.7
57.402
57.252
55.093
5.5
60
59.645
56.428
56.258
53.252
1.5
62
61.85
61.026
60.926
60.16
2
62
61.82
60.701
60.589
59.546
3
62
61.764
60.051
59.919
58.319
4
62
61.7
59.402
59.252
57.093
64
1.5
64
63.85
63.026
62.926
62.16
2
64
63.82
62.701
62.589
61.546
3
64
63.764
62.051
61.919
60.319
4
64
63.7
61.402
61.252
59.093
6
64
63.625
60.103
59.923
56.639
65
1.5
65
64.85
64.026
63.926
63.16
2
65
64.82
63.701
63.589
62.546
3
65
64.764
63.051
62.919
61.319
4
65
64.7
62.402
62.252
60.093
68
1.5
68
67.85
67.026
66.926
66.16
2
68
67.82
66.701
66.589
65.546
3
68
67.764
66.051
65.919
64.319
4
68
67.7
65.402
65.252
63.093
6
68
67.625
64.103
63.923
60.639
70
1.5
70
69.85
69.026
68.926
68.16
2
70
69.82
68.701
68.589
67.546
3
70
69.764
68.051
67.919
66.319
4
70
69.7
67.402
67.252
65.093
6
70
69.625
66.103
65.923
62.639
72
1.5
72
71.85
71.026
70.926
70.16
2
72
71.82
70.701
70.589
69.546
3
72
71.764
70.051
69.919
68.319
4
72
71.7
69.402
69.252
67.093
6
72
71.625
68.103
67.923
64.639
75
1.5
75
74.85
74.026
73.926
73.16
2
75
74.82
73.701
73.589
72.546
3
75
74.764
73.051
72.919
71.319
4
75
74.7
72.402
72.252
70.093
76
1.5
76
75.85
75.026
74.926
74.16
2
76
75.82
74.701
74.589
73.546
3
76
75.764
74.051
73.919
72.319
4
76
75.7
73.402
73.252
71.093
6
76
75.625
72.103
71.923
68.639
78
2
78
77.82
76.701
76.589
75.546
80
1.5
80
79.85
79.026
78.926
78.16
2
80
79.82
78.701
78.589
77.546
3
80
79.764
78.051
77.919
76.319
4
80
79.7
77.402
77.252
75.093
6
80
79.625
76.103
75.923
72.639
82
2
82
81.82
80.701
80.589
79.546
85
2
85
84.82
83.701
83.589
82.546
3
85
84.764
83.051
82.919
81.319
4
85
84.700
82.402
82.252
80.093
6
85
84.625
81.103
80.923
77.639
90
2
90
89.82
88.701
88.589
87.546
3
90
89.764
88.051
87.919
86.319
4
90
89.7
87.402
87.252
85.093
6
90
89.625
86.103
85.923
82.639
95
2
95
94.82
93.701
93.583
92.546
3
95
94.764
93.051
92.911
91.319
4
95
94.7
92.402
92.242
90.093
6
95
94.625
91.103
90.913
87.639
100
2
100
99.82
98.701
98.583
97.546
3
100
99.764
98.051
97.911
96.319
4
100
99.7
97.402
97.242
95.093
6
100
99.625
96.103
95.913
92.639
-
6h: Table 7 of limit dimensions of external threads with nominal diameter 1~100mm
Table 7 Limit dimensions of 6h external thread
Nominal diameter
d
pitch
P
Da Jia
Medium diameter
trails
(refer to)
d3max _
dmax _
dmin _
d2max _
d 2min
1
0.2
1
0.944
0.87
0.822
0.755
0.25
1
0.933
0.838
0.785
0.693
1.1
0.2
1.1
1.044
0.97
0.922
0.855
0.25
1.1
1.033
0.938
0.885
0.793
1.2
0.2
1.2
1.144
1.07
1.022
0.955
0.25
1.2
1.133
1.038
0.985
0.893
1.4
0.2
1.4
1.344
1.27
1.222
1.155
0.3
1.4
1.325
1.205
1.149
1.032
1.6
0.2
1.6
1.544
1.47
1.42
1.355
0.35
1.6
1.515
1.373
1.31
1.171
1.8
0.2
1.8
1.744
1.67
1.62
1.555
0.35
1.8
1.715
1.573
1.51
1.371
2
0.25
2
1.933
1.838
1.782
1.693
0.4
2
1.905
1.74
1.673
1.509
2.2
0.25
2.2
2.133
2.038
1.982
1.893
0.45
2.2
2.1
1.908
1.837
1.648
2.5
0.35
2.5
2.415
2.273
2.21
2.071
0.45
2.5
2.4
2.208
2.137
1.948
3
0.35
3
2.915
2.773
2.706
2.571
0.5
3
2.894
2.675
2.6
2.387
3.5
0.35
3.5
3.415
3.273
3.206
3.071
0.6
3.5
3.375
3.11
3.025
2.764
4
0.5
4
3.894
3.675
3.6
3.387
0.7
4
3.86
3.545
3.455
3.141
4.5
0.5
4.5
4.394
4.175
4.1
3.887
0.75
4.5
4.36
4.013
3.923
3.58
5
0.5
5
4.894
4.675
4.6
4.387
0.8
5
4.85
4.48
4.385
4.019
5.5
0.5
5.5
5.394
5.175
5.1
4.887
6
0.75
6
5.86
5.513
5.413
5.08
1
6
5.82
5.35
5.238
4.773
7
0.75
7
6.86
6.513
6.413
6.08
1
7
6.82
6.35
6.238
5.773
8
0.75
8
7.86
7.513
7.413
7.08
1
8
7.82
7.35
7.238
6.773
1.25
8
7.788
7.188
7.07
6.466
9
0.75
9
8.86
8.513
8.413
8.08
1
9
8.82
8.35
8.238
7.773
1.25
9
8.788
8.188
8.07
7.466
10
0.75
10
9.86
9.513
9.413
9.08
1
10
9.82
9.35
9.238
8.773
1.25
10
9.788
9.188
9.070
8.466
1.5
10
9.764
9.026
8.894
8.16
11
0.75
11
10.86
10.513
10.413
10.08
1
11
10.82
10.35
10.238
9.773
1.5
11
10.764
10.026
9.894
9.16
12
1
12
11.82
11.35
11.232
10.773
1.25
12
11.788
11.188
11.056
10.466
1.7
12
11.764
11.026
10.886
10.16
1.75
12
11.735
10.863
10.713
9.853
14
1
14
13.82
13.35
13.232
12.773
1.5
14
13.764
13.026
12.886
12.16
2
14
13.72
12.701
12.541
11.546
15
1
15
14.82
14.35
14.232
13.773
1.5
15
14.764
14.026
13.886
13.16
16
1
16
15.82
15.35
15.232
14.773
1.5
16
15.764
15.026
14.886
14.16
2
16
15.72
14.701
14.541
13.546
17
1
17
16.82
16.35
16.232
15.773
1.5
17
16.764
16.026
15.886
15.16
18
1
18
17.82
17.35
17.232
16.773
1.5
18
17.764
17.026
16.886
16.16
2
18
17.72
16.701
16.541
15.546
2.5
18
17.665
16.376
16.206
14.933
20
1
20
19.82
19.35
19.232
18.773
1.5
20
19.764
19.026
18.886
18.16
2
20
19.72
18.701
18.541
17.546
2.5
20
19.665
18.376
18.206
16.933
22
1
22
21.82
21.35
21.232
20.7737
1.5
22
21.764
21.026
20.886
20.16
2
22
21.72
20.701
20.541
19.546
2.5
22
21.665
20.376
20.206
18.933
24
1
24
23.82
23.35
23.225
22.773
1.5
24
23.764
23.026
22.876
22.16
2
24
23.72
22.701
22.531
21.546
3
24
23.625
22.051
21.851
20.319
25
1
25
24.82
24.35
24.225
23.773
1.5
25
24.764
24.026
23.876
23.16
2
25
24.72
23.701
23.531
22.546
26
1.5
26
25.764
25.026
24.876
24.16
27
1
27
26.82
26.35
26.225
25.773
1.5
27
26.764
26.026
25.876
25.16
2
27
26.72
25.701
25.531
24.546
3
27
26.625
25.051
24.851
23.319
28
1
28
27.82
27.35
27.225
26.773
1.5
28
27.764
27.026
26.876
26.16
2
28
27.72
26.701
26.531
25.546
30
1
30
29.82
29.35
29.225
28.773
1.5
30
29.764
29.026
28.876
28.16
2
30
29.72
28.701
28.531
27.546
3
30
29.625
28.051
27.851
26.319
3.5
30
29.575
27.727
27.515
25.706
32
1.5
32
31.764
31.026
30.876
30.16
2
32
31.72
30.701
30.531
29.546
33
1.5
33
32.764
32.026
31.876
31.16
2
33
32.72
31.701
31.531
30.546
3
33
32.625
31.051
30.851
29.319
3.5
33
32.575
30.727
30.515
28.706
36
1.5
36
35.764
35.026
34.876
34.16
2
36
35.72
34.701
34.531
33.546
3
36
35.625
34.051
33.851
32.319
4
36
35.523
33.402
33.178
31.093
38
1.5
38
37.764
37.026
36.876
36.16
39
1.5
39
38.764
38.026
37.876
37.16
2
39
38.72
37.701
37.531
36.546
3
39
38.625
37.051
36.851
35.319
4
39
38.525
36.402
36.178
34.093
40
1.5
40
39.764
39.026
38.876
38.16
2
40
39.72
38.701
38.531
37.546
3
40
39.625
38.051
37.851
36.319
42
1.5
42
41.764
41.026
40.876
40.16
2
42
41.72
40.701
40.531
39.546
3
42
41.625
40.051
39.851
38.319
4
42
41.525
39.402
39.178
37.093
4.5
42
41.5
39.077
38.841
36.479
45
1.5
45
44.764
44.026
43.876
43.16
2
45
44.72
43.701
43.531
42.546
3
45
44.625
43.051
42.851
41.319
4
45
44.525
42.402
42.178
40.093
4.5
45
44.5
42.077
41.841
39.479
48
1.5
48
47.764
47.026
46.866
46.16
2
48
47.72
46.701
46.521
45.546
3
48
47.625
46.051
45.839
44.319
4
48
47.525
45.402
45.166
43.093
5
48
47.47
44.752
44.502
41.866
50
1.5
50
49.764
49.026
48.866
48.16
2
50
49.72
48.701
48.521
47.546
3
50
49.625
48.051
47.839
46.319
52
1.5
52
51.764
51.026
50.866
50.16
2
52
51.72
50.701
50.521
49.546
3
52
51.625
50.051
49.839
48.319
4
52
51.525
49.402
49.166
47.093
5
52
51.47
48.752
48.502
45.866
55
1.5
55
54.764
54.026
53.866
53.16
2
55
54.72
53.701
53.521
52.546
3
55
54.625
53.051
52.839
51.319
4
55
54.525
52.402
52.166
50.093
56
1.5
56
55.764
55.026
54.866
54.16
2
56
55.72
54.701
54.521
53.546
3
56
55.625
54.051
53.839
52.319
4
56
55.525
53.402
53.166
51.093
5.5
56
55.44
52.428
52.163
49.252
58
1.5
58
57.764
57.026
56.866
56.16
2
58
57.72
56.701
56.521
55.546
3
58
57.625
56.051
55.839
54.319
4
58
57.525
55.402
55.166
53.093
60
1.5
60
59.764
59.026
58.866
58.16
2
60
59.72
58.701
58.521
57.546
3
60
59.625
58.051
57.839
56.319
4
60
59.525
57.402
57.166
55.093
5.5
60
59.44
56.428
56.163
53.252
62
1.5
62
61.764
61.026
60.866
60.16
2
62
61.72
60.701
60.521
59.546
3
62
61.625
60.051
59.839
58.319
4
62
61.525
59.402
59.166
57.093
64
1.5
64
63.764
63.026
62.866
62.16
2
64
63.72
62.701
62.521
61.546
3
64
63.625
62.051
61.839
60.319
4
64
63.525
61.402
61.166
59.093
6
64
63.4
60.103
59.823
56.639
65
1.5
65
64.764
64.026
63.866
63.16
2
65
64.72
63.701
63.521
62.546
3
65
64.625
63.051
62.839
61.319
4
65
64.525
62.402
62.166
60.093
68
1.5
68
67.764
67.026
66.866
66.16
2
68
67.72
66.701
66.521
65.546
3
68
67.625
66.051
65.839
64.319
4
68
67.525
65.402
65.166
63.093
6
68
67.4
64.103
63.823
60.639
70
1.5
70
69.764
69.026
68.866
68.16
2
70
69.72
68.701
68.521
67.546
3
70
69.625
68.051
67.839
66.319
4
70
69.525
67.402
67.166
65.093
6
70
69.4
66.103
65.823
62.639
72
1.5
72
71.764
71.026
70.866
70.16
2
72
71.72
70.701
70.521
69.546
3
72
71.625
70.051
69.839
68.319
4
72
71.525
69.402
69.166
67.093
6
72
71.4
68.103
67.823
64.639
75
1.5
75
74.764
74.026
73.866
73.16
2
75
74.72
73.701
73.521
72.546
3
75
74.625
73.051
72.839
71.319
4
75
74.525
72.402
72.166
70.093
76
1.5
76
75.764
75.026
74.866
74.16
2
76
75.72
74.701
74.521
73.546
3
76
75.625
74.051
73.839
72.319
4
76
75.525
73.402
73.166
71.093
6
76
75.4
72.103
71.823
68.639
78
2
78
77.72
76.701
76.521
75.546
80
1.5
80
79.764
79.026
78.866
78.16
2
80
79.72
78.701
78.521
77.546
3
80
79.625
78.051
77.839
76.319
4
80
79.525
77.402
77.166
75.093
6
80
79.4
76.103
75.823
72.639
82
2
82
81.72
80.701
80.521
79.546
85
2
85
84.72
83.701
83.521
82.546
3
85
84.625
83.051
82.839
81.319
4
85
84.525
82.402
82.166
80.093
6
85
84.4
81.103
80.823
77.639
90
2
90
89.72
88.701
88.521
87.546
3
90
89.625
88.051
87.839
86.319
4
90
89.525
87.402
87.166
85.093
6
90
89.4
86.103
85.823
82.639
95
2
95
94.72
93.701
93.511
92.546
3
95
94.625
93.051
92.827
91.319
4
95
94.525
92.402
92.152
90.093
6
95
94.4
91.103
90.803
87.639
100
2
100
99.72
98.701
98.511
97.546
3
100
99.625
98.051
97.827
96.319
4
100
99.525
97.402
97.152
95.093
6
100
99.4
96.103
95.803
92.639
-
6g: Limit size table 8 of external threads with nominal diameter 1~300mm
Table 8 Limit dimensions of 6g external thread
Nominal diameter
d
pitch
P
Da Jia
Medium diameter
trails
(refer to)
d3max _
dmax _
dmin _
d2max _
d 2min
1
0.2
0.983
0.927
0.853
0.805
0.738
0.25
0.982
0.915
0.82
0.767
0.675
1.1
0.2
1.083
1.027
0.953
0.905
0.838
0.25
1.082
1.015
0.92
0.867
0.775
1.2
0.2
1.183
1.127
1.053
1.005
0.938
0.25
1.182
1.115
1.02
0.967
0.875
1.4
0.2
1.383
1.327
1.253
1.205
1.138
0.3
1.382
1.307
1.187
1.131
1.014
1.6
0.2
1.583
1.527
1.453
1.403
1.338
0.35
1.581
1.496
1.354
1.291
1.152
1.8
0.2
1.783
1.727
1.653
1.603
1.538
0.35
1.781
1.696
1.554
1.491
1.352
2
0.25
1.982
1.915
1.82
1.764
1.675
0.4
1.981
1.886
1.721
1.654
1.49
2.2
0.25
2.182
2.115
2.02
1.964
1.875
0.45
2.18
2.080
1.888
1.817
1.628
2.5
0.35
2.481
2.396
2.254
2.191
2.052
0.45
2.48
2.38
2.188
2.117
1.928
3
0.35
2.981
2.896
2.754
2.687
2.552
0.5
2.98
2.874
2.655
2.58
2.367
3.5
0.35
3.481
3.396
3.254
3.187
3.052
0.6
3.479
3.354
3.089
3.004
2.743
4
0.5
3.98
3.874
3.655
3.58
3.367
0.7
3.978
3.838
3.523
3.433
3.119
4.5
0.5
4.48
4.374
4.155
4.08
3.867
0.75
4.478
4.338
3.991
3.901
3.558
5
0.5
4.98
4.874
4.655
4.58
4.367
0.8
4.976
4.826
4.456
4.361
3.995
5.5
0.5
5.48
5.374
5.155
5.08
4.867
6
0.75
5.978
5.838
5.491
5.391
5.058
1
5.974
5.794
5.324
5.212
4.747
7
0.75
6.978
6.838
6.491
6.391
6.058
1
6.974
6.794
6.324
6.212
5.747
8
0.75
7.978
7.838
7.491
7.391
7.058
1
7.974
7.794
7.324
7.212
6.747
1.25
7.972
7.76
7.16
7.042
6.438
9
0.75
8.978
8.838
8.491
8.391
8.058
1
8.974
8.794
8.324
8.212
7.747
1.25
8.972
8.76
8.16
8.042
7.438
10
0.75
9.978
9.838
9.491
9.391
9.058
1
9.974
9.794
9324
9.212
8.747
1.25
9.972
9.76
9.16
9.042
8.438
1.5
9.968
9.732
8.994
8.862
8.128
11
0.75
10.978
10.838
10.491
10.391
10.058
1
10.974
10.794
10.324
10.212
9.747
1.5
10.968
10.732
9.994
9.862
9.128
12
1
11.974
11.794
11.324
11.206
10.747
1.25
11.972
11.76
11.16
11.028
10.438
1.5
11.968
11.732
10.994
10.854
10.128
1.75
11.966
11.701
10.829
10.679
9.819
14
1
13.974
13.794
13.324
13.206
12.747
1.5
13.968
13.732
12.994
12.854
12.128
2
13.962
13.682
12.663
12.503
11.508
15
1
14.974
14.794
14.324
14.206
13.747
1.5
14.968
14.732
13.994
13.854
13.128
16
1
15.974
15.794
15.324
15.206
14.747
1.5
15.968
15.732
14.994
14.854
14.128
2
15.962
15.682
14.663
14.503
13.508
17
1
16.974
16.794
16.324
16.206
15.747
1.5
16.968
16.732
15.994
15.854
15.128
18
1
17.974
17.794
17.324
17.206
16.747
1.5
17.968
17.732
16.994
16.854
16.128
2
17.962
17.682
16.663
16.503
15.508
2.5
17.958
17.623
16.334
16.164
14.891
20
1
19.974
19.794
19.324
19.206
18.747
1.5
19.968
19.732
18.994
18.854
18.128
2
19.962
19.682
18.663
18.503
17.508
2.5
19.958
19.623
18.334
18.164
16.891
22
1
21.974
21.794
21.324
21.206
20.747
1.5
21.968
21.732
20.994
20.854
20.128
2
21.962
21.682
20.663
20.503
19.508
2.5
21.958
21.623
20.334
20.164
18.891
24
1
23.974
23.794
23.324
23.199
22.747
1.5
23.968
23.732
22.994
22.844
22.128
2
23.962
23.682
22.663
22.493
21.508
3
23.952
23.577
22.003
21.803
20.271
25
1
24.974
24.794
24.324
24.199
23.747
1.5
24.968
24.732
23.994
23.844
23.128
2
24.962
24.682
23.663
23.493
22.508
26
1.5
25.968
25.732
24.994
24.844
24.128
27
1
26.974
26.794
26.324
26.199
25.747
1.5
26.968
26.732
25.994
25.844
25.128
2
26.962
26.682
25.663
25.493
24.508
3
26.952
26.577
25.003
24.803
23.271
28
1
27.974
27.794
27.324
27.199
26.747
1.5
27.968
27.732
26.994
26.844
26.128
2
27.962
27.682
26.663
26.493
25.508
30
1
29.974
29.794
29.324
29.199
28.747
1.5
29.968
29.732
28.994
28.844
28.128
2
29.962
29.682
28.663
28.493
27.508
3
29.952
29.577
28.003
27.803
26.271
3.5
29.947
29.522
27.674
27.462
25.653
32
1.5
31.968
31.732
30.994
30.844
30.128
2
31.962
31.682
30.663
30.493
29.508
33
1.5
32.968
32.732
31.994
31.844
31.128
2
32.962
32.682
31.663
31.493
30.508
3
32.952
32.577
31.003
30.803
29.271
3.5
32.947
32.522
30.674
30.462
28.653
36
1.5
35.968
35.732
34.994
34.844
34.128
2
35.962
35.682
34.663
34.493
33.508
3
35.952
35.577
34.003
33.803
32.271
4
35.94
35.465
33.342
33.118
31.033
38
1.5
37.968
37.732
36.994
36.844
36.128
39
1.5
38.968
38.732
37.994
37.844
37.128
2
38.962
38.682
37.663
37.493
36.508
3
38.952
38.577
37.003
36.803
35.271
4
38.94
38.465
36.342
36.118
34.033
40
1.5
39.968
39.732
38.994
38.844
38.128
2
39.962
39.682
38.663
38.493
37.508
3
39.952
39.577
38.003
37.803
36.271
42
1.5
41.968
41.732
40.994
40.844
40.128
2
41.962
41.682
40.663
40.493
39.508
3
41.952
41.577
40.003
39.803
38.271
4
41.94
41.465
39.342
39.118
37.033
4.5
41.937
41.437
39.014
38.778
36.416
45
1.5
44.968
44.732
43.994
43.844
43.128
2
44.962
44.682
43.663
43.493
42.508
3
44.952
44.577
43.003
42.803
41.271
4
44.94
44.465
42.342
42.118
40.033
4.5
44.937
44.437
42.014
41.778
39.416
48
1.5
47.968
47.732
46.994
46.834
46.128
2
47.962
47.682
46.663
46.483
45.508
3
47.952
47.577
46.003
45.791
44.271
4
47.94
47.465
45.342
45.106
43.033
5
47.929
47.399
44.681
44.431
41.795
50
1.5
49.968
49.732
48.994
48.834
48.128
2
49.962
49.682
48.663
48.483
47.508
3
49.952
49.577
48.003
47.791
46.271
52
1.5
51.968
51.732
50.994
50.834
50.128
2
51.962
51.682
50.663
50.483
49.508
3
51.952
51.577
50.003
49.791
48.271
4
51.94
51.465
49.342
49.106
47.033
5
51.929
51.399
48.681
48.431
45.795
55
1.5
54.968
54.732
53.994
53.834
53.128
2
54.962
54.682
53.663
53.483
52.508
3
54.952
54.577
53.003
52.791
51.271
4
54.94
54.465
52.342
52.106
50.033
56
1.5
55.968
55.732
54.994
54.834
54.128
2
55.962
55.682
54.663
54.483
53.508
3
55.952
55.577
54.003
53.791
52.271
4
55.94
55.465
53.342
53.106
51.033
5.5
55.925
55.365
52.353
52.088
49.177
58
1.5
57.968
57.732
56.994
56.834
56.128
2
57.962
57.682
56.663
56.483
55.508
3
57.952
57.577
56.003
55.791
54.271
4
57.94
57.465
55.342
55.106
53.033
60
1.5
59.968
59.732
58.994
58.834
58.128
2
59.962
59.682
58.663
58.483
57.508
3
59.952
59.577
58.003
57.791
56.271
4
59.94
59.465
57.342
57.106
55.033
5.5
59.925
59.365
56.353
56.088
53.177
62
1.5
61.968
61.732
60.994
60.834
60.128
2
61.962
61.682
60.663
60.483
59.508
3
61.952
61.577
60.003
59.791
58.271
4
61.94
61.465
59.342
59.106
57.033
64
1.5
63.968
63.732
62.994
62.834
62.128
2
63.962
63.682
62.663
62.483
61.508
3
63.952
63.577
62.003
61.791
60.271
4
63.94
63.465
61.342
61.106
59.033
6
63.92
63.32
60.023
59.743
56.559
65
1.5
64.968
64.732
63.994
63.834
63.128
2
64.962
64.682
63.663
63.483
62.508
3
64.952
64.577
63.003
62.791
61.271
4
64.94
64.465
62.342
62.106
60.033
68
1.5
67.968
67.732
66.994
66.834
66.128
2
67.962
67.682
66.663
66.483
65.508
3
67.952
67.577
66.003
65.791
64.271
4
67.94
67.465
65.342
65.106
63.033
6
67.92
67.32
64.023
63.743
60.559
70
1.5
69.968
69.732
68.994
68.834
68.128
2
69.962
69.682
68.663
68.483
67.508
3
69.952
69.577
68.003
67.791
66.271
4
69.94
69.465
67.342
67.106
65.033
6
69.92
69.32
66.023
65.743
62.559
72
1.5
71.968
71.732
70.994
70.834
70.128
2
71.962
71.682
70.663
70.483
69.508
3
71.952
71.577
70.003
69.791
68.271
4
71.94
71.465
69.342
69.106
67.033
6
71.92
71.32
68.023
67.743
64.559
75
1.5
74.968
74.732
73.994
73.834
73.128
2
74.962
74.682
73.663
73.483
72.508
3
74.952
74.577
73.003
72.791
71.271
4
74.94
74.465
72.342
72.106
70.033
76
1.5
75.968
75.732
74.994
74.834
74.128
2
75.962
75.682
74.663
74.483
73.508
3
75.952
75.577
74.003
73.791
72.271
4
75.94
75.465
73.342
73.106
71.033
6
75.92
75.32
72.023
71.743
68.559
78
2
77.962
77.682
76.663
76.483
75.508
80
1.5
79.968
79..732
78.994
78.834
78.128
2
79.962
79.682
78.663
78.483
77.508
3
79.952
79.577
78.003
77.791
76.271
4
79.94
79.465
77.342
77.106
75.033
6
79.92
79.32
76.023
75.743.
72.559
82
2
81.962
81.682
80.663
80.483
79.508
85
2
84.962
84.682
83.663
83.483
82.508
3
84.952
84.577
83.003
82.791
81.271
4
84.94
84.465
82.342
82.106
80.033
6
84.92
84.32
81.023
80.743
77.559
90
2
89.962
89.682
88.663
88.483
87.508
3
89.952
89.577
88.003
87.791
86.271
4
89.94
89.465
87.342
87.106
85.033
6
89.92
89.32
86.023
85.743
82.559
95
2
94.962
94.682
93.663
93.473
92.508
3
94.952
94.577
93.003
92.779
91.271
4
94.94
94.465
92.342
92.092
90.033
6
94.92
94.32
91.023
90.723
87.559
100
2
99.962
99.682
98.663
98.473
97.508
3
99.952
99.577
98.003
97.779
96.271
4
99.94
99.465
97.342
97.092
95.033
6
99.92
99.32
96.023
95.723
92.559
105
2
104.962
104.682
103.663
103.473
102.508
3
104.952
104.577
103.003
102.779
101.271
4
104.94
104.465
102.342
102.092
100.033
6
104.92
104.32
101.023
100.723
97.559
110
2
109.962
109.682
108.663
108.473
107.508
3
109.952
109.577
108.003
107.779
106.271
4
109.94
109.465
107.342
107.092
105.033
6
109.92
109.32
106.023
105.723
102.559
115
2
114.962
114.682
113.663
113.473
112.508
3
114.952
114.577
113.003
112.779
111.271
4
114.94
114.465
112.342
112.092
110.033
6
114.92
114.32
111.023
110.723
107.559
120
2
119.962
119.682
118.663
118.473
117.508
3
119.952
119.577
118.003
117.779
116.271
4
119.94
119.465
117.342
117.092
115.033
6
119.92
119.32
116.023
115.723
112.559
125
2
124.962
124.682
123.663
123.473
122.508
3
124.952
124.577
123.003
122.779
121.271
4
124.94
124.465
122.342
122.092
120.033
6
124.92
124.32
121.023
120.723
117.559
8
124.9
124.19
119.704
119.369
115.085
130
2
129.962
129.682
128.663
128.473
127.508
3
129.952
129.577
128.003
127.779
126.271
4
129.94
129.465
127.342
127.092
125.033
6
129.92
129.32
126.023
125.723
122.559
8
129.9
129.19
124.704
124.369
120.085
135
2
134.962
134.682
133.663
133.473
132.508
3
134.952
134.577
133.003
132.779
131.271
4
134.94
134.465
132.342
132.092
130.033
6
134.92
134.32
131.023
130.723
127.559
140
2
139.962
139.682
138.663
138.473
137.508
3
139.952
139.577
138.003
137.779
136.271
4
139.94
139.465
137.342
137.092
135.033
6
139.92
139.32
136.023
135.723
132.559
8
139.9
139.19
134.704
134.369
130.085
145
2
144.962
144.682
143.663
143.473
142.508
3
144.952
144.577
143.003
142.779
141.271
4
144.94
144.465
142.342
142.092
140.033
6
144.92
144.32
141.023
140.723
137.559
150
2
149.962
149.682
148.663
148.473
147.508
3
149.952
149.577
148.003
147.779
146.271
4
149.94
149.465
147.342
147.092
145.033
6
149.92
149.32
146.023
145.723
142.559
8
149.9
149.19
144.704
144.369
140.085
155
3
154.952
154.577
153.003
152.779
151.271
4
154.94
154.465
152.342
152.092
150.033
6
154.92
154.32
151.023
150.723
147.559
160
3
159.952
159.577
158.003
157.779
156.271
4
159.94
159.465
157.342
157.092
155.033
6
159.92
159.32
156.023
155.723
152.559
8
159.9
159.19
154.704
154.369
150.085
165
3
164.952
164.577
163.003
162.779
161.271
4
164.94
164.465
162.342
162.092
160.033
6
164.92
164.32
161.023
160.723
157.559
170
3
169.952
169.577
168.003
167.779
166.271
4
169.94
169.465
167.342
167.092
165.033
6
169.92
169.32
166.023
165.723
162.559
8
169.9
169.19
164.704
164.369
160.085
175
3
174.952
174.577
173.003
172.779
171.271
4
174.94
174.465
172.342
172.092
170.033
6
174.92
174.32
171.023
170.723
167.559
180
3
179.952
179.577
178.003
177.779
176.271
4
179.94
179.465
177.342
177.092
175.033
6
179.92
179.32
176.023
175.723
172.559
8
179.9
179.19
174.704
174.369
170.085
185
3
184.952
184.577
183.003
182.753
181.271
4
184.94
184.465
182.342
182.062
180.033
6
184.92
184.32
181.023
180.708
177.559
190
3
189.952
189.577
188.003
187.753
186.271
4
189.94
189.465
187.342
187.062
185.033
6
189.92
189.32
186.023
185.708
182.559
8
189.9
189.19
184.704
184.349
180.085
195
3
194.952
194.577
193.003
192.753
191.271
4
194.94
194.465
192.342
192.062
190.033
6
194.92
194.32
191.023
190.708
187.559
200
3
199.952
199.577
198.003
197.753
196.271
4
199.94
199.465
197.342
197.062
195.033
6
199.92
199.32
196.023
195.708
192.559
8
199.9
199.19
194.704
194.349
190.085
205
3
204.952
204.577
203.003
202.753
201.271
4
204.94
204.465
202.342
202.062
200.033
6
204.92
204.32
201.023
200.708
197.559
210
3
209.952
209.577
208.003
207.753
206.271
4
209.94
209.465
207.342
207.062
205.033
6
209.92
209.32
206.023
205.708
202.559
8
209.9
209.19
204.704
204.349
200.085
215
3
214.952
214.577
213.003
212.753
211.271
4
214.94
214.465
212.342
212.062
210.033
6
214.92
214.32
211.023
210.708
207.559
220
3
219.952
219.577
218.003
217.753
216.271
4
219.94
219.465
217.342
217.062
215.033
6
219.92
219.32
216.023
215.708
212.559
8
219.9
219.19
214.704
214.349
210.085
225
3
224.952
224.577
223.003
222.753
221.271
4
224.94
224.465
222.342
222.062
220.033
6
224.92
224.32
221.023
220.708
217.559
230
3
229.952
229.577
228.003
227.753
226.271
4
229.94
29.465
227.342
227.062
225.033
6
229.92
229.32
226.023
225.708
222.559
8
229.9
229.19
224.704
224.349
220.085
235
3
234.952
234.577
233.003
232.753
231.271
4
234.94
234.465
232.342
232.062
230.033
6
234.92
234.32
231.023
230.708
227.559
240
3
239.952
239.577
238.003
237.753
236.271
4
239.94
239.465
237.342
237.062
235.033
6
239.92
239.32
236.023
235.708
232.559
8
239.9
239.19
234.704
234.349
230.085
245
3
244.952
244.577
243.003
242.753
241.271
4
244.94
244.465
242.342
242.062
240.033
6
244.92
244.32
241.023
240.708
237.559
250
3
249.952
249.577
248.003
247.753
246.271
4
249.94
249.465
247.342
247.062
245.033
6
249.92
249.32
246.023
245.708
242.559
8
249.9
249.19
244.704
244.349
240.085
255
4
254.94
254.465
252.342
252.062
250.033
6
254.92
254.32
251.023
250.708
247.559
260
4
259.94
259.465
257.342
257.062
255.033
6
259.92
259.32
256.023
255.708
252.559
8
259.9
259.19
254.704
254.349
250.085
265
4
264.94
264.465
262.342
262.062
260.033
6
264.92
264.32
261.023
260.708
257.559
270
4
269.94
269.465
267.342
267.062
265.033
6
269.92
269.32
266.023
265.708
262.559
8
269.9
269.19
264.704
264.349
260.085
275
4
274.94
274.465
272.342
272.062
270.033
6
274.92
274.32
271.023
270.708
267.559
280
4
279.94
279.465
277.342
277.062
275.033
6
279.92
279.32
276.023
275.708
272.559
8
279.9
279.19
274.704
274.349
270.085
285
4
284.94
284.465
282.342
282.062
280.033
6
284.92
284.32
281.023
280.708
277.559
290
4
289.94
289.465
287.342
287.062
285.033
6
289.92
289.32
286.023
285.708
282.559
8
289.9
289.19
284.704
284.349
280.085
295
4
294.94
294.465
292.342
292.062
290.033
6
294.92
294.32
291.023
290.708
287.559
300
4
299.94
299.465
297.342
297.062
295.033
6
299.92
299.32
296.023
295.708
292.559
8
299.9
299.19
294.704
294.349
290.085
-
6f: Limit size table 9 of external threads with nominal diameter 1.6~200mm
-
6e: Limit size table 10 for external threads with nominal diameter 3~200mm