For Additional Technical Information Please Email - customerservice@newyorktwistdrill.com
|
Metric Tap Drill Chart
|
| |
BASED ON APPROX. 60° THREAD |
BASED ON APPROX. 75° THREAD
|
| |
|
METRIC TAP SIZE & PITCH
|
THEORETICAL DRILL SIZE
|
RECOMMENDED METRIC DRILL SIZE /
|
CLOSEST AMERICAN DRILL
|
THEORETICAL DRILL SIZE
|
RECOMMENDED METRIC DRILL SIZE /
|
CLOSEST AMERICAN DRILL
|
|
mm
|
mm
|
SIZE
|
mm EQUIV.
|
mm
|
mm
|
SIZE
|
mm EQUIV.
|
|
M1.5 X 0.35
|
1.2272
|
1.20
|
3/64
|
1.1913
|
1.1590
|
1.15
|
57
|
1.0922
|
|
M1.6 X 0.35
|
1.3272
|
1.30
|
55
|
1.3208
|
1.2590
|
1.25
|
3/64
|
1.1913
|
|
M1.8 X 0.35
|
1.5272
|
1.50
|
53
|
1.5113
|
1.4590
|
1.45
|
54
|
1.3970
|
|
M2.0 X 0.45
|
1.6492
|
1.65
|
52
|
1.6129
|
1.5612
|
1.55
|
53
|
1.5113
|
|
M2.0 X 0.40
|
1.6882
|
1.65
|
52
|
1.6129
|
1.6102
|
1.60
|
1/16
|
1.5875
|
|
M2.2 X 0.45
|
1.8492
|
1.85
|
49
|
1.8542
|
1.7615
|
1.75
|
51
|
1.7018
|
|
M2.3 X 0.40
|
1.9882
|
1.95
|
5/64
|
1.9837
|
1.9102
|
1.90
|
49
|
1.8542
|
|
M2.5 X 0.45
|
2.1492
|
2.15
|
45
|
2.0828
|
2.0615
|
2.05
|
46
|
2.0574
|
|
M2.6 X 0.45
|
2.2492
|
2.25
|
44
|
2.1844
|
2.1615
|
2.15
|
45
|
2.0828
|
|
M3.0 X 0.60
|
2.5324
|
2.50
|
39
|
2.5273
|
2.4155
|
2.40
|
3/32
|
2.3825
|
|
M3.0 X 0.50
|
2.6147
|
2.60
|
38
|
2.5781
|
2.5184
|
2.50
|
40
|
2.4892
|
|
M3.5 X 0.60
|
3.0324
|
3.00
|
32
|
2.9464
|
2.9155
|
2.90
|
33
|
2.8702
|
|
M4.0 X 0.75
|
3.4154
|
3.40
|
30
|
3.2639
|
3.2693
|
3.25
|
30
|
3.2639
|
|
M4.0 X 0.70
|
3.4544
|
3.40
|
29
|
3.4544
|
3.3180
|
3.30
|
30
|
3.2639
|
|
M4.5 X 0.75
|
3.9154
|
3.90
|
23
|
3.9116
|
3.7693
|
3.75
|
26
|
3.7338
|
|
M5.0 X 1.00
|
4.2206
|
4.20
|
19
|
4.2164
|
4.0257
|
4.00
|
22
|
3.9878
|
|
M5.0 X 0.90
|
4.2988
|
4.25
|
19
|
4.2164
|
4.1235
|
4.10
|
20
|
4.0894
|
|
M5.0 X 0.80
|
4.3764
|
4.30
|
11/64
|
4.3662
|
4.2204
|
4.20
|
19
|
4.2164
|
|
M5.5 X 0.90
|
4.7988
|
4.75
|
3/16
|
4.7625
|
4.6235
|
4.60
|
14
|
4.6228
|
|
M6.0 X 1.00
|
5.2206
|
5.20
|
5
|
5.2197
|
5.0257
|
5.00
|
9
|
4.9784
|
|
M6.0 X 0.75
|
5.4154
|
5.40
|
3
|
5.4102
|
5.2693
|
5.25
|
5
|
5.2197
|
|
M7.0 X 1.00
|
6.2206
|
6.20
|
C
|
6.1468
|
6.0257
|
6.00
|
15/64
|
5.9537
|
|
M7.0 X 0.75
|
6.4154
|
6.40
|
D
|
6.2484
|
6.2693
|
6.25
|
D
|
6.2484
|
|
M8.0 X 1.25
|
7.0258
|
7.00
|
I
|
6.9088
|
6.7823
|
6.75
|
H
|
6.7564
|
|
M8.0 X 1.00
|
7.2206
|
7.20
|
9/32
|
7.1450
|
7.0257
|
7.00
|
I
|
6.9088
|
|
M9.0 X 1.25
|
8.0258
|
8.00
|
5/16
|
7.9375
|
7.7823
|
7.75
|
N
|
7.6708
|
|
M9.0 X 1.00
|
8.2206
|
8.20
|
P
|
8.2042
|
8.0257
|
8.00
|
5/16
|
7.9375
|
|
M10 X 1.50
|
8.8308
|
8.80
|
11/32
|
8.7325
|
8.5385
|
8.50
|
Q
|
8.4328
|
|
M10 X 1.25
|
9.0258
|
9.00
|
S
|
8.8392
|
8.7823
|
8.75
|
11/32
|
8.7325
|
|
M10 X 1.00
|
9.2206
|
9.20
|
23/64
|
9.1286
|
9.0257
|
9.00
|
S
|
8.8392
|
|
M11 X 1.50
|
9.8308
|
9.80
|
W
|
9.8044
|
9.5385
|
9.50
|
3/8
|
9.5250
|
|
M12 X 1.75
|
10.6360
|
10.50
|
Z
|
10.4902
|
10.2950
|
10.00
|
Y
|
10.2616
|
|
M12 X 1.50
|
10.8308
|
10.80
|
27/64
|
10.7162
|
10.5385
|
10.50
|
Z
|
10.4902
|
|
M12 X 1.25
|
11.0258
|
11.00
|
27/64
|
10.7162
|
10.7823
|
10.50
|
27/64
|
10.7162
|
|
M14 X 2.00
|
12.4413
|
12.40
|
31/64
|
12.3037
|
12.0516
|
12.00
|
15/32
|
11.9075
|
|
M14 X 1.50
|
12.8308
|
12.80
|
1/2
|
12.7000
|
12.5385
|
12.50
|
31/64
|
12.3037
|
|
M14 X 1.25
|
13.0258
|
13.00
|
1/2
|
12.7000
|
12.7823
|
12.70
|
1/2
|
12.7000
|
|
M15 X 1.50
|
13.8308
|
13.80
|
17/32
|
13.4950
|
13.5385
|
13.50
|
17/32
|
13.4950
|
|
M16 X 2.00
|
14.4413
|
14.25
|
9/16
|
14.2875
|
14.0516
|
14.00
|
35/64
|
13.8912
|
|
M16 X 1.50
|
14.8308
|
14.75
|
37/64
|
14.6837
|
14.5385
|
14.50
|
9/16
|
14.2875
|
|
M17 X 1.50
|
15.8308
|
15.75
|
39/64
|
15.4787
|
15.5385
|
15.50
|
39/64
|
15.4787
|
|
M18 X 2.50
|
16.0513
|
16.00
|
5/8
|
15.8750
|
15.5643
|
15.50
|
39/64
|
15.4787
|
|
M18 X 2.00
|
16.4413
|
16.25
|
41/64
|
16.2712
|
16.0516
|
16.00
|
5/8
|
15.8750
|
|
M18 X 1.50
|
16.8308
|
16.75
|
21/32
|
16.6700
|
16.5385
|
16.50
|
41/64
|
16.2712
|
|
M19 X 2.50
|
17.0513
|
17.00
|
21/32
|
16.6700
|
16.5643
|
16.50
|
41/64
|
16.2712
|
|
M20 X 2.50
|
18.0513
|
18.00
|
45/65
|
17.8587
|
17.5643
|
17.50
|
11/16
|
17.4625
|
|
M20 X 2.00
|
18.4413
|
18.25
|
23/32
|
18.2557
|
18.0516
|
18.00
|
45/64
|
17.8587
|
|
M20 X 1.50
|
18.8308
|
18.75
|
47/64
|
18.6538
|
18.5385
|
18.50
|
23/32
|
18.2557
|
|
M22 X 2.50
|
20.0513
|
20.00
|
25/32
|
19.8425
|
19.5643
|
19.50
|
49/64
|
19.4462
|
|
M22 X 2.00
|
20.4413
|
20.25
|
51/64
|
20.2413
|
20.0516
|
20.00
|
25/32
|
19.8425
|
|
M22 X 1.50
|
20.8308
|
20.75
|
13/16
|
20.6358
|
20.5385
|
20.50
|
51/64
|
20.2413
|
|
M24 X 3.00
|
21.6619
|
21.50
|
27/32
|
21.4325
|
21.0773
|
21.00
|
53/64
|
21.0337
|
|
M24 X 2.00
|
22.4413
|
22.25
|
7/8
|
22.2250
|
22.0516
|
22.00
|
55/64
|
21.8288
|
|
M24 X 1.50
|
22.8308
|
22.75
|
57/64
|
22.6212
|
22.5385
|
22.50
|
7/8
|
22.2250
|
|
M25 X 2.00
|
23.4413
|
23.25
|
59/64
|
23.4163
|
23.0516
|
23.00
|
29/32
|
23.0175
|
|
M25 X 1.50
|
23.8308
|
23.75
|
15/16
|
23.8125
|
23.5385
|
23.50
|
59/64
|
23.4163
|
|
M26 X 3.00
|
23.6619
|
23.50
|
59/64
|
23.4165
|
23.0773
|
23.00
|
29/32
|
23.0175
|
|
M27 X 3.00
|
24.6619
|
24.50
|
31/32
|
24.6075
|
24.0773
|
24.00
|
15/16
|
23.8125
|
|
M27 X 2.00
|
25.4413
|
25.25
|
1
|
25.4000
|
25.0516
|
25.00
|
63/64
|
25.0038
|
|
M28 X 3.00
|
25.6619
|
25.50
|
1
|
25.4000
|
25.0773
|
25.00
|
63/64
|
25.0038
|
|
M28 X 2.00
|
26.4413
|
26.25
|
1-1/32
|
26.1925
|
26.0516
|
26.00
|
1-1/64
|
25.7962
|
|
M30 X 3.50
|
27.2720
|
27.25
|
1-1/16
|
26.9875
|
26.5900
|
26.50
|
1-1/32
|
26.1925
|
|
M30 X 3.00
|
27.6619
|
27.50
|
1-5/64
|
27.3837
|
27.0773
|
27.00
|
1-1/16
|
26.9875
|
|
M30 X 2.00
|
28.4413
|
28.25
|
1-7/64
|
28.1788
|
28.0516
|
28.00
|
1-3/32
|
27.7825
|
|
M32 X 3.50
|
29.2720
|
29.25
|
1-9/64
|
28.9712
|
28.5900
|
28.50
|
1-1/8
|
28.5750
|
|
M32 X 2.00
|
30.4413
|
30.25
|
1-3/16
|
30.1625
|
30.0516
|
30.00
|
1-11/64
|
29.7663
|
|
M33 X 3.50
|
30.2720
|
30.25
|
1-3/16
|
30.1625
|
29.5900
|
29.50
|
1-5/32
|
29.3675
|
|
M33 X 3.00
|
30.6619
|
30.50
|
1-13/64
|
30.5587
|
30.0773
|
30.00
|
1-11/64
|
29.7663
|
|
M33 X 2.00
|
31.4413
|
31.25
|
1-15/64
|
31.3538
|
31.0516
|
31.00
|
1-7/32
|
30.9575
|
|
M34 X 3.50
|
31.2720
|
31.25
|
1-7/32
|
30.9575
|
30.5900
|
30.50
|
1-13/64
|
30.5587
|
|
M36 X 4.00
|
32.8822
|
32.75
|
1-9/32
|
32.5425
|
32.1028
|
32.00
|
1-17/64
|
31.7500
|
|
M36 X 3.00
|
33.6619
|
33.50
|
1-5/16
|
33.3375
|
33.0773
|
33.00
|
1-19/64
|
32.9413
|
|
M36 X 2.00
|
34.4413
|
34.25
|
1-11/32
|
34.1325
|
34.0516
|
34.00
|
1-21/64
|
33.7337
|
|
M38 X 4.00
|
34.8822
|
34.75
|
1-23/64
|
34.5288
|
34.1028
|
34.00
|
1-21/64
|
33.7337
|
|
M39 X 4.00
|
35.8822
|
35.75
|
1-13/32
|
35.7175
|
35.1028
|
35.00
|
1-3/8
|
34.9250
|
|
M39 X 3.00
|
36.6619
|
36.50
|
1-7/16
|
36.5125
|
36.0773
|
36.00
|
1-13/32
|
35.7175
|
|
M39 X 2.00
|
37.4413
|
37.25
|
1-15/32
|
37.3075
|
37.0516
|
37.00
|
1-29/64
|
36.9087
|
