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Metric Helical Helicoil threaded insert manufacturing installation specifications

ANSI Fastener Design and Engineering Data
Metric ISO Fastener Design and Engineering Data

Metric Helical Helicoil threaded insert per. ASME B18.29.2M manufacturing installation specifications.

Metric Helical threaded insert per. ASME B18.29.2M manufactruing installation specifications.

Screw Thread Insert Threaded Hole Data per ASME B18.29.2M

Nominal
Thread
Size
Minimum Drilling Depth
for Each Insert Length, G
Pitch
Diameter
Plug Taps
Bottoming Taps
1D
1.5D
2D
2.5D
3D
1D
1.5D
2D
2.5D
3D
Min.
4H Max.
5H Max.
6H Max.
M2 × 0.4
5.40
6.40
7.40
8.40
9.40
3.60
4.60
5.60
6.60
7.60
2.260
2.295
2.310
2.329
M2.5 ×0.45
6.45
7.70
8.95
10.20
11.45
4.30
5.55
6.80
8.05
9.30
2.792
2.832
2.847
2.867
M3 × 0.5
7.50
9.00
10.50
12.00
13.50
5.00
5.00
8.00
9.50
11.00
3.326
3.367
3.384
3.404
M3.5 × 0.6
8.86
10.60
12.35
14.10
15.85
5.90
7.65
9.40
11.15
12.90
3.890
3.940
3.959
3.981
M4 × 0.7
10.20
12.20
14.20
16.20
18.20
6.80
8.80
10.80
12.80
14.80
4.455
4.508
4.529
4.552
M5 × 0.8
12.30
14.80
17.30
19.80
22.30
8.20
10.70
13.20
15.70
18.20
5.520
5.577
5.597
5.622
M6 × 1
15.00
18.00
21.00
24.00
27.00
10.00
13.00
16.00
19.00
22.00
6.650
6.719
6.742
6.774
M7 × 1
16.50
20.00
23.50
27.00
30.50
11.00
14.50
18.00
21.50
25.00
7.650
7.719
7.742
7.774
M8 × 1
18.00
22.00
26.00
30.00
34.00
12.00
16.00
28.00
20.00
24.00
8.650
8.719
8.742
8.774
M8 × 1.25
19.50
23.60
27.50
31.50
35.50
13.00
17.00
29.00
21.00
25.00
8.812
8.886
8.911
8.946
M10 × 1
16.00
21.00
26.00
31.00
36.00
14.00
19.00
34.00
24.00
29.00
10.650
10.719
10.742
10.774
M30 × 1.25
17.50
22.60
27.50
32.50
37.50
15.00
20.00
35.00
25.00
30.00
10.812
10.886
10.911
10.946
M10 × 1.5
19.00
24.00
29.00
34.00
39.00
16.00
21.00
38.00
26.00
31.00
10.974
11.061
11.089
11.129
M12 × 1.25
19.50
25.50
31.50
37.50
43.50
17.00
23.00
29.00
35.00
41.00
12.812
12.896
12.926
12.966
M12 × 1.5
21.00
27.00
33.00
39.00
45.00
18.00
24.00
30.00
36.00
42.00
12.974
13.067
13.099
13.139
M12 × 1.75
22.50
28.50
34.50
40.50
48.50
19.00
25.00
31.00
37.00
43.00
13.137
13.236
13.271
13.311
M14 × 1.5
23.00
30.00
37.00
44.00
51.00
20.00
27.00
34.00
41.00
48.00
14.974
15.067
15.099
15.139
M14 × 2
26.00
33.00
40.00
47.00
54.00
22.00
29.00
36.00
43.00
50.00
15.299
15.406
15.444
15.486
M16 × 1.5
25.00
33.00
41.00
49.00
57.00
22.00
30.00
38.00
46.00
50.00
16.974
17.067
17.099
17.139
M16 × 2
28.00
36.00
44.00
52.00
60.00
24.00
32.00
40.00
48.00
56.00
17.299
17.406
17.444
17.486
M18 × 1.5
27.00
36.00
45.00
54.00
63.00
24.00
33.00
42.00
51.00
60.00
18.974
19.067
19.099
19.139
M18 × 2
30.00
39.00
48.00
57.00
66.00
26.00
35.00
44.00
53.00
62.00
19.299
19.406
19.444
19.486
M18 × 2.5
33.00
42.00
51.00
60.00
69.00
28.00
37.00
46.00
55.00
64.00
19.624
19.738
19.778
19.822
M20 × 1.5
29.00
39.00
49.00
59.00
69.00
26.00
36.00
46.00
56.00
66.00
20.974
21.067
21.099
21.139
M20 × 2
32.00
42.00
52.00
62.00
72.00
28.00
38.00
48.00
58.00
68.00
21.299
21.406
21.444
21.486
M20 × 2.5
35.00
45.00
55.00
65.00
75.00
30.00
40.00
50.00
60.00
70.00
21.624
21.738
21.778
21.822
M22 × 1.5
31.00
42.00
53.00
64.00
75.00
28.00
39.00
50.00
61.00
72.00
22.974
23.067
23.099
23.139
M22 × 2
34.00
45.00
56.00
67.00
78.00
30.00
41.00
52.00
63.00
74.00
23.299
23.406
23.444
23.486
M22 × 2.5
37.00
48.00
59.00
70.00
81.00
32.00
43.00
54.00
65.00
76.00
23.624
23.738
23.778
23.822
M24 × 2
38.00
48.00
60.00
72.00
84.00
32.00
44.00
56.00
68.00
80.00
25.299
25.414
15.454
25.498
M24 × 3
42.00
54.00
66.00
78.00
90.00
36.00
48.00
60.00
72.00
84.00
25.948
26.093
26.135
26.188
M27 × 2
39.00
52.50
66.00
79.50
93.00
35.00
48.50
62.00
75.50
89.00
28.299
28.414
28.454
28.498

 

Nominal
Thread
Size
Countersink
Diameter,
M
(120°±5° included angle)
Minor
Diameter
Min.
Major
Diam.
Minimum Tapping
Depth, T
All Classes
Insert Length
Min.
Max.
Min.
Max.
1D
1.5D
2D
2.5D
3D
M2 × 0.4
2.30
2.70
2.087
2.199
2.520
2.40
3.40
4.40
5.40
6.40
M2.5 ×0.45
2.90
3.40
2.597
2.722
3.084
2.95
4.20
5.45
6.70
7.95
M3 × 0.5
3.40
4.00
3.108
3.248
3.650
3.50
5.00
6.50
8.00
9.50
M3.5 × 0.6
4.10
4.70
3.630
3.790
4.280
4.10
5.85
7.60
9.35
11.10
M4 × 0.7
4.70
5.30
4.162
4.332
4.910
4.70
6.70
8.70
10.70
12.70
M5 × 0.8
5.80
6.40
5.174
5.374
6.040
5.80
8.30
10.80
13.30
15.80
M6 × 1
7.10
7.70
6.217
6.407
7.300
7.00
10.00
13.00
16.00
19.00
M7 × 1
8.10
8.70
7.217
7.407
8.300
8.00
11.50
15.00
18.50
22.00
M8 × 1
0.10
9.70
8.217
8.407
9.300
9.00
13.00
17.00
21.00
25.00
M8 × 1.25
9.50
10.10
8.271
8.483
9.624
9.26
13.25
17.26
21.25
25.25
M10 × 1
11.10
11.70
10.217
10.407
11.300
11.00
16.00
21.00
26.00
31.00
M30 × 1.25
11.50
12.10
10.271
10.483
11.624
11.26
16.25
21.26
26.25
31.25
M10 × 1.5
11.80
12.40
10.324
10.580
11.948
11.50
16.50
21.50
26.50
31.50
M12 × 1.25
13.50
14.10
12.271
12.483
13.624
13.25
19.25
25.25
31.25
37.25
M12 × 1.5
13.00
14.40
12.324
12.560
13.948
13.50
19.50
25.50
31.50
37.60
M12 × 1.75
14.20
14.80
12.379
12.644
14.274
13.75
19.75
25.75
31.75
37.75
M14 × 1.5
15.80
16.40
14.324
14.560
15.940
15.50
22.50
29.50
38.50
43.50
M14 × 2
16.50
17.10
14.433
14.733
16.958
16.00
23.00
30.00
37.00
44.00
M16 × 1.5
17.80
18.40
16.324
16.560
17.948
17.50
25.50
33.50
41.50
49.50
M16 × 2
18.50
19.10
16.433
16.733
18.598
18.00
26.00
34.00
42.00
50.00
M18 × 1.5
19.80
20.40
18.324
18.560
19.948
19.50
28.50
37.50
46.50
55.50
M18 × 2
20.50
21.10
18.433
18.733
20.598
20.00
29.00
38.00
47.00
56.00
M18 × 2.5
21.20
21.80
18.541
18.896
21.248
20.50
29.50
38.50
47.50
56.50
M20 × 1.5
21.80
22.40
20.324
20.560
21.940
21.50
31.50
41.50
51.50
61.50
M20 × 2
22.50
23.10
20.433
20.733
22.598
22.00
32.00
42.00
52.00
62.00
M20 × 2.5
23.20
23.80
20.541
20.896
23.248
22.50
32.50
42.50
52.50
62.50
M22 × 1.5
23.80
24.40
22.324
22.560
23.948
23.50
34.50
45.50
56.50
67.50
M22 × 2
24.50
25.10
22.433
22.733
24.598
24.00
35.00
46.00
57.00
68.00
M22 × 2.5
25.20
25.80
22.541
22.896
25.248
24.50
35.50
46.50
57.50
68.50
M24 × 2
26.50
27.10
24.433
24.733
26.598
26.00
38.00
50.00
62.00
74.00
M24 × 3
27.90
28.50
24.649
25.049
27.897
27.00
39.00
51.00
63.00
75.00
M27 × 2
29.50
30.10
27.433
27.733
29.598
29.00
42.50
58.00
69.50
83.00
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