CUTTING TOOLS Drills 1
DRILL — DECIMAL EQUIVALENTS CHART
METRIC • WIRE# • FRACTIONAL • LETTER SIZES
Drill Size
Drill Size
Drill Size
Drill Size
Drill Size
Drill Size
Decimal
Decimal
Decimal
Decimal
Decimal
Decimal
5.10 mm
.2008 .2010 .2031 .2040 .2047 .2055 .2087 .2090 .2126 .2130 .2165 .2188 .2205 .2210 .2244 .2280 .2283 .2323 .2340 .2344 .2362 .2380 .2402 .2420 .2441 .2460 .2480 .2500 .2500 .2520 .2559 .2570 .2598 .2610 .2638 .2656 .2660 .2677 .2717 .2720 .2756 .2770 .2795 .2810 .2812 .2835 .2874 .2900 .2913 .2950 .2953 .2969 .2992 .3020 .3031 .3071 .3110 .3125
17/32
.5312 .5315 .5469 .5512 .5625 .5709 .5781 .5906 .5938 .6094 .6102 .6250 .6299 .6406 .6496 .6562 .6693 .6719 .6875 .6890 . 7031 .7087 .7188 .7283 .7344 .7480 .7500 .7656 .7677 .7812 .7874 .7969 .8071 .8125 .8268 .8281 .8438 .8465 .8594 .8661 .8750 .8858 .8906 .9055 .9062 .9219 .9252 .9375 .9449 .9531 .9646 .9688 .9843 .9844 1.0000
0.10 mm 97 Wire 96 Wire 95 Wire 94 Wire 93 Wire 92 Wire 0.20 mm 91 Wire 90 Wire 89 Wire 88 Wire 87 Wire 86 Wire 85 Wire 84 Wire 0.30 mm 83 Wire 82 Wire 81 Wire 80 Wire 0.35 mm 79 Wire
.0039 .0059 .0063 .0067 .0071 .0075 .0079 .0079 .0083 .0087 .0091 .0095 .0100 .0105 .0110 .0115 .0118 .0120 .0125 .0130 .0135 .0138 .0145 .0156 .0157 .0160 .0177 0180 .0197 .0200 .0210 .0217 .0225 .0236 .0240 .0250 .0256 .0260 .0276 .0280 .0292 .0295 .0310 .0312 .0315 .0320 .0330 .0335 .0350 .0360 .0360 .0370 .0374 .0380 .0390 .0394 .0400 .0410
1.05 mm 58 Wire 57 Wire 1.10 mm 1.15 mm 56 Wire
.0413 .0420 .0430 .0433 .0453 .0465 .0469 .0472 .0492 .0512 .0520 .0531 .0550 .0551 .0571 .0591 .0595 .0610 .0625 .0630 .0635 .0650 .0669 .0670 .0689 .0700 .0709 .0728 .0730 .0748 .0760 .0768 .0781 .0785 .0787 .0807 .0810
36 Wire
.1065 .1094 .1100 .1102 .1110 .1130 .1142 .1160 .1181 .1200 .1220 .1250 .1260 .1285 .1299 .1339 .1360 .1378 .1405 .1406 .1417 .1440 .1457 .1470 .1495 .1496 .1520 .1535 .1540 .1562 .1570 .1575 .1590 .1610 .1614 .1654 .1660 .1693 .1695 .1719 .1730 .1732 .1770 .1772 .1800 .1811 .1820 .1850 .1850 .1875 .1890 .1890 .1910 .1929 .1935 .1960 .1969 .1990
8.00 mm
.3150 .3160 .3189 .3228 .3230 .3268 .3281 .3307 .3320 .3346 .3386 .3390 .3425 .3438 .3465 .3480 .3504 .3543 .3580 .3583 .3594 .3622 .3661 .3680 .3701 .3740 .3750 .3770 .3780 .3819 .3858 .3860 .3898 .3906 .3937 .3970 .4016 .4040 .4055 .4062 .4130 .4134 .4219 .4252 .4331 .4375 .4409 .4528 .4531 .4646 .4688 .4724 .4803 .4844 .4921 .5000 .5118 .5156
7/64
7 Wire 13/64 6 Wire
O
13.50 mm
35/64
35 Wire 2.80 mm 34 Wire 33 Wire 2.90 mm 32 Wire 3.00 mm 31 Wire 3.10 mm
8.10 mm 8.20 mm
14.00 mm
9/16
5.20 mm
P
5 Wire
8.30 mm
14.50 mm
3/64
21/64
37/64
5.30 mm
1.20 mm 1.25 mm 1.30 mm 55 Wire 1.35 mm 54 Wire 1.40 mm 1.45 mm 1.50 mm 53 Wire 1.55 mm
4 Wire
8.40 mm
15.00 mm
19/32 39/64
5.40 mm
Q
3 Wire
8.50 mm 8.60 mm
5.50 mm
15.50 mm
1/8
7/32
5/8
R
3.20 mm 30 Wire 3.30 mm 3.40 mm 29 Wire 3.50 mm 28 Wire
5.60 mm
8.70 mm
16.00 mm
11/32
41/64
2 Wire
5.70 mm
8.80 mm
16.50 mm
21/32
1 Wire
S
5.80 mm 5.90 mm
8.90 mm 9.00 mm
17.00 mm
43/64 11/16
1/16
A
T
9/64
15/64
1.60 mm 52 Wire 1.65 mm 1.70 mm 51 Wire 1.75 mm 50 Wire 1.80 mm 1.85 mm 49 Wire 1.90 mm 48 Wire 1.95 mm
9.10 mm
17.50 mm
23/64
45/64
3.60 mm 27 Wire 3.70 mm 26 Wire 25 Wire 3.80 mm 24 Wire 3.90 mm 23 Wire
6.00 mm
B
9.20 mm 9.30 mm
18.00 mm
23/32
6.10 mm
1/64
C
U
18.50 mm
47/64
0.04 mm 78 Wire 0.45 mm 77 Wire. 0.50 mm 76 Wire 75 Wire 0.55 mm 74 Wire 0.60 mm 73 Wire 72 Wire 0.65 mm 71 Wire 0.70 mm 70 Wire 69 Wire 0.75 mm 68 Wire
6.20 mm
9.40 mm 9.50 mm
D
19.00 mm
3/8
3/4
6.30 mm
1/4
49/64
V
E
9.60 mm 9.70 mm 9.80 mm
19.50 mm
6.40 mm 6.50 mm
5/32
25/32
22 Wire 4.00 mm 21 Wire 20 Wire 4.10 mm 4.20 mm 19 Wire 4.30 mm 18 Wire
20.00 mm
51/64
F
W
5/64
6.60 mm
9.90 mm
20.50 mm
6
25/64
13/16
47 Wire 2.00 mm 2.05 mm 46 Wire 45 Wire 2.10 mm 2.15 mm 44 Wire 2.20 mm 2.25 mm 43 Wire 2.30 mm 2.35 mm 42 Wire
G
6.70 mm
10.00 mm
21.00 mm
17/64
53/64 27/32
X
H
10.20 mm
.820
6.80 mm 6.90 mm
Y
21.50 mm
55/64
.0827 .0846 .0860 .0866 .0886 .0890 .0906 .0925 .0935 .0938 .0945 .0960 .0965 .0980 .0984 .0995 .1015 .1024 .1040 .1063
10.30 mm
11/64
13/32
I
22.00 mm
7/8
17 Wire 4.40 mm 16 Wire 4.50 mm 15 Wire 4.60 mm 14 Wire 13 Wire 4.70 mm
7.00 mm
Z
J
10.50 mm
22.50 mm
27/64
57/64
7.10 mm
1/32
K
10.80 mm 11.00 mm
23.00 mm
9/32
29/32 59/64
0.80 mm 67 Wire 66 Wire 0.85 mm 65 Wire 0.90 mm 64 Wire 63 Wire 0.95 mm 62 Wire 61 Wire 1.00 mm 60 Wire 59 Wire
7/16
7.20 mm 7.30 mm
11.20 mm 11.50 mm
23.50 mm
3/32
15/16
L
29/64
2.40 mm 41 Wire 2.45 mm 40 Wire 2.50 mm 39 Wire 38 Wire 2.60 mm 37 Wire 2.70 mm
7.40 mm
24.00 mm
3/16
61/64
M
11.80 mm
15/32
12 Wire 4.80 mm 11 Wire 4.90 mm 10 Wire 9 Wire 5.00 mm
7.50 mm
24.50 mm
19/64
31/32
12.00 mm 12.20 mm
7.60 mm
25.00 mm
31/64
63/64
N
7.70 mm 7.80 mm 7.90 mm
12.50 mm
1”
1/2
13.00 mm
5/16
33/64
8 Wire
TAP DRILL SIZES
Thread
Thread
Drill 3/64
Thread
Drill
Thread
Drill
Thread M8.0-1 3/8-16 3/8-24
Drill
Thread M20-1.5
Drill
0-80
4-40
43 42
10-24 10-32
25 21
7.0M 9/16-12
31/64
18.5M 49/64 19.5M 20.5M 13/16 21.0M 22.0M
M1.6-.35
1.25M 4-48
5/16
M14-1.5 9/16-18
12.5M 7/8-9
1-64
54
M3.0-.5
2.50M M5.0-.8
4.20M
Q
33/64
M22-2.5
M1.8-.35
1.45M 5-40
38 37 36 33
12-24 12-28
16 14
M10-1.5 M10-1.25
8.5M M16-2
14.0M M22-1.5
1-72
53
5-44
11/32
5/8-11
17/32
7/8-14
M2.0-.4
1.60M 6-32
M6.0-1 1/4-20
5.0M
7/16-14 7/16-20
U
M16/1.5
14.5M M24-3
2-56
51
6-40
7 3
25/64
5/8-18
37/64
M24-2
M2.2-.45
1.75M M3.5-.6
2.90M 1/4-28 3.30M M7.0-1
M12-1.75
Y
M18-2.5 M18-1.5
15.5M 1-8 16.5M 1-12
7/8
2-64 3-48
50 47
M4.0-.7
6.0M
1/2-13
27/64
59/64 15/16
8-32
29 29 26
5/16-18
F
M12-1.25
10.8M 3/4-10
21/32 11/16 17.5M
1-14
M2.5-.45
2.05M 8-36
M8.0-1.25
H
1/2-20 M14-2
29/64
3/4-16
3-56
45
M4.5-.75
5/16-24
I
12.0M M20-2.5
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