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Machinist Tap - Drill Chart for ANSI Size Threads
Machinist Tap - Drill Size Chart ANSI Standard Pipe Thread Machinist Metric ISO Screw Thread Tap - Drill Size Chart
| METRIC COARSE SIZES |
| TAP SIZE |
DRILL SIZE |
| 1mm x .25 |
.75mm |
| 1.1 x .25 |
.85 |
| 1.2 x .25 |
.95 |
| 1.4 x .3 |
1.1 |
| 1.6 x .35 |
1.25 |
| 1.7 x .35 |
1.3 |
| 1.8 x .35 |
1.45 |
| 2 x .4 |
1.6 |
| 2.2 x .45 |
1.75 |
| 2.5 x .45 |
2.05 |
| 3 x .5 |
2.5 |
| 3.5 x .6 |
2.9 |
| 4 x .7 |
3.3 |
| 4.5 x .75 |
3.7 |
| 5 x .8 |
4.2 |
| 6 x 1 |
5 |
| 7 x 1 |
6 |
| 8 x 1.25 |
6.8 |
| 9 x 1.25 |
7.8 |
| 10 x 1.5 |
8.5 |
| 11 x 1.5 |
9.5 |
| 12 x 1.75 |
10.2 |
| 14 x 2 |
12 |
| 16 x 2 |
14 |
| 18 x 2.5 |
15.5 |
| 20 x 2.5 |
17.5 |
| 22 x 2.5 |
19.5 |
| 24 x 3 |
21 |
| 27 x 3 |
24 |
| 30 x 3.5 |
26.5 |
| 33 x 3.5 |
29.5 |
| 36 x 4 |
32 |
| 39 x 4 |
35 |
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| METRIC FINE SIZES |
| TAP SIZE |
DRILL SIZE |
| 4 mm x .35 |
3.6mm |
| 4 x .5 |
3.5 |
| 5 x .5 |
4.5 |
| 6 x .5 |
5.5 |
| 6 x .75 |
5.25 |
| 7 x .75 |
6.25 |
| 8 x .5 |
7.5 |
| 8 x .75 |
7.25 |
| 8 x 1 |
7.0 |
| 9 x 1 |
8 |
| 10 x .75 |
9.25 |
| 10 x 1 |
9 |
| 10 x 1.25 |
8.8 |
| 11 x 1 |
10 |
| 12 x .75 |
11.25 |
| 12 x 1 |
11 |
| 12 x 1.5 |
10.5 |
| 14 x 1 |
13 |
| 14 x 1.25 |
12.8 |
| 14 x 1.5 |
12.5 |
| 16 x 1 |
15 |
| 16 x 1.5 |
14.5 |
| 18 x 1 |
17 |
| 18 x 2 |
16 |
| 20 x 1 |
19 |
| 20 x 1.5 |
18.5 |
| 20 x 2 |
18 |
| 22 x 1 |
21 |
| 22 x 1.5 |
20.5 |
| 22 x 2 |
20 |
| 24 x 1.5 |
22.5 |
| 24 x 2 |
22 |
| 26 x 1.5 |
24.5 |
| 27 x 1.5 |
25.5 |
| 27 x 2 |
25 |
| 28 x 1.5 |
26.5 |
| 30 x 1.5 |
28.5 |
| 30 x 2 |
28 |
| 33 x 2 |
31 |
| 36 x 3 |
33 |
| 39 x 3 |
36 |
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