 | Thread Cutting by Dies and Taps - Course: Techniques for machining of material. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 20 p.) |
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Appendix 1
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Metric thread (standardized) |
Metric fine thread (standardized) | |
| |
Whitworth thread (standardized) | |||||
|
Thread |
Drill diameter |
Thread |
Drill diameter |
Thread |
Drill diameter |
Thread |
Drill diameter |
Thread |
Drill diameter | |
| | | | | | | | | |
series 1 |
series 2 |
|
M 6 |
5.00 |
M 6 x 0.75 |
5.2 |
M 22 x 1.5 |
20.5 |
M 42 x 4 |
38.0 |
1/4 |
5.0 |
5.10 |
|
M 8 |
6.75 |
M 8 x 0.75 |
7.2 |
M 22 x 2 |
20.0 |
M 45 x 2 |
43.0 |
5/16 |
6.40 |
6.50 |
|
M 10 |
8.50 |
M 8 x 1 |
7.0 |
M 24 x 1 |
23.0 |
M 45 x 3 |
42.0 |
3/8 |
7.70 |
7.90 |
|
M 12 |
10.25 |
M 9 x 1 |
9.0 |
M 24 x 1.5 |
22.5 |
M 45 x 4 |
41.0 |
7/16 |
9.10 |
9.25 |
|
M 14 |
12.00 |
M 10 x 0.75 |
9.2 |
M 24 x 2 |
22.0 |
M 48 x 2 |
46.0 |
1/2 |
10.25 |
10.50 |
|
M 16 |
14.00 |
M 10 x 1 |
9.0 |
M 27 x 1 |
26.0 |
M 48 x 3 |
45.0 |
5/8 |
13.25 |
13.50 |
|
M 18 |
15.50 |
M 10 x 1.25 |
8.8 |
M 27 x 1.5 |
25.5 |
M 48 x 4 |
44.0 |
3/4 |
16.25 |
16.50 |
|
M 20 |
17.50 |
M 12 x 1 |
11.0 |
M 27 x 2 |
25.0 |
M 52 x 2 |
50.0 |
7/8 |
19.00 |
19.25 |
|
M 22 |
19.50 |
M 12 x 1.25 |
10.8 |
M 30 x 1 |
29.0 |
M 52 x 3 |
49.0 1 |
- |
21.75 |
22.00 |
|
M 24 |
21.00 |
M 12 x 1.5 |
10.5 |
M 30 x 1.5 |
28.5 |
M 52 x 4 |
48.0 1 |
1/8 |
24.50 |
24.75 |
|
M 27 |
24.00 |
M 14 x 1 |
13.0 |
M 30 x 2 |
28.0 |
M 56 x 2 |
54.0 1 |
1/4 |
27.50 |
27.75 |
|
M 30 |
26.50 |
M 14 x 1.25 |
12.8 |
M 30 x 3 |
27.0 |
M 46 x 3 |
53.0 1 |
3/8 |
30.00 |
30.50 |
|
M 33 |
29.50 |
M 14 x 1.5 |
12.5 |
M 33 x 1.5 |
31.5 |
M 56 x 4 |
52.0 1 |
1/2 |
33.00 |
33.50 |
|
M 36 |
32.00 |
M 16 x 1 |
15.0 |
M 33 x 2 |
31.0 |
M 60 x 2 |
58.0 1 |
5/8 |
35.00 |
35.50 |
|
M 39 |
35.00 |
M 16 x 1.5 |
14.5 |
M 33 x 3 |
30.0 |
M 60 x 3 |
57.0 1 |
3/4 |
38.50 |
39.00 |
|
M 42 |
37.50 |
M 18 x 1 |
17.0 |
M 36 x 1.5 |
34.5 |
M 60 x 4 |
56.0 1 |
7/8 |
41.00 |
41.50 |
|
M 45 |
40.50 |
M 18 x 1.5 |
16.5 |
M 36 x 2 |
34.0 |
M 64 x 2 |
62.0 2 | |
44.00 |
44.50 |
|
M 48 |
43.00 |
M 18 x 2 |
16.0 |
M 36 x 3 |
33.0 |
M 64 x 3 |
61.0 | | | |
|
M 52 |
47.00 |
M 20 x 1 |
19.0 |
M 39 x 2 |
37.0 |
M 64 x 4 |
60.0 | | | |
|
M 56 |
50.50 |
M 20 x 1.5 |
18.5 |
M 39 x 3 |
36.0 |
M 68 x 2 |
66.0 | | | |
|
M 60 |
54.50 |
M 20 x 2 |
18.0 |
M 42 x 2 |
40.0 |
M 68 x 3 |
65.0 | | | |
|
M 64 |
58.00 |
M 22 x 1 |
21.0 |
M 42 x 3 |
39.0 |
M 68 x 3 |
64.0 | | | |
|
M 68 |
62.00 | |
| | | | | | | |
|
Series one |
Series two | ||
|
grey cast iron |
brittle copper alloys |
steel |
zinc alloys |
|
bronze |
some aluminium alloys |
cast steel |
some aluminium alloys |
|
brass |
magnesium, iron, die and wrought alloys |
malleable cast iron |
pressed materials |
