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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.
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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