Ideal Precision Instrument Service, Inc.
4539 East Broad St. Columbus, OH 43213 Phone: (614) 866-1443 / 1- 800- 867-1433Fax: (614) 866- 5441
Metric Tap Drill Chart
Tap Size
Drill Size
Metric
mm
1.0x0.2
0.8
11x0.75
10.2
22x1.0
21
32x1.5
30.5
1.1x0.2
0.9
11x1
10
22x1.5
20.5
32x2.0
30
1.2x0.2
1
12x1
11
22x2.0
20
33x1.5
31.5
1.4z0.2
1.2
12x1.25
10.8
24x1.0
23
33x2.0
31
1.6x0.2
1.4
12x1.5
10.5
24x1.5
22.5
33x3.0
1.8x0.2
1.6
14x1.0
13
24x2.0
22
35x1.5
33.5
2x0.25
1.75
14x1.25
12.8
25x1.0
24
35x2.0
33
2.2x0.25
1.95
14x1.5
12.5
25x1.5
23.5
36x1.5
34.5
2.5x0.35
2.1
15x1
14
25x2.0
36x2.0
34
3x0.35
2.6
15x1.5
13.5
27x1.0
26
36x3.0
3.5x0.35
3.1
16x1
15
27x1.5
25.5
39x1.5
37.5
4x0.5
3.5
16x1.5
14.5
27x2.0
25
39x2.0
37
4.5x0.5
4
17x1.0
16
28x1.0
27
39x3.0
36
5x0.5
4.5
17x1.5
15.5
28x1.5
26.5
40x1.5
38.5
5.5x0.5
5
18x1.0
17
28x2.0
40x2.0
38
6x0.75
5.2
18x1.5
16.5
30x1.0
29
40x3.0
7x0.75
6.2
18x2.0
30x1.5
28.5
8x0.75
7.2
20x1.0
19
30x2.0
28
8x1.0
7
20x1.5
18.5
30x3.0
9x0.75
8.2
20x2.0
18
9x 1
8
10x0.75
9.2
10x1
9
10x1.25
8.8