Drill Size Chart

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Drill Size Chart
Decimal
(mm)
Decimal
(mm)
Decimal
(mm)
Size
Size
Size
Equiv.
Equiv.
Equiv.
Equiv.
Equiv.
Equiv.
1/16"
0.0625
1.587
1
0.2280
5.791
61
0.0390
0.991
5/64"
0.0781
1.983
2
0.2210
5.613
62
0.0380
0.965
3/32"
0.0937
2.379
3
0.2130
5.410
63
0.0370
0.94
7/64"
0.1093
2.776
4
0.2090
5.308
64
0.0360
0.914
1/8"
0.1250
3.175
5
0.2055
5.219
65
0.0350
0.889
9/64"
0.1406
3.571
6
0.2040
5.181
66
0.0330
0.838
5/32"
0.1562
3.967
7
0.2010
5.105
67
0.0320
0.813
11/64"
0.1718
4.363
8
0.1990
5.054
68
0.0310
0.787
3/16"
0.1875
4.762
9
0.1960
4.978
69
0.0292
0.742
13/64"
0.2031
5.158
10
0.1935
4.914
70
0.0280
0.711
7/32"
0.2187
5.554
11
0.1910
4.851
71
0.0260
0.66
15/64"
0.2343
5.951
12
0.1890
4.800
72
0.0250
0.635
1/4"
0.2500
6.350
13
0.1850
4.699
73
0.0240
0.61
17/64"
0.2656
6.746
14
0.1820
4.622
74
0.0225
0.572
9/32"
0.2812
7.142
15
0.1800
4.572
75
0.0210
0.533
19/64"
0.2968
7.538
16
0.1770
4.495
76
0.0200
0.508
5/16"
0.3125
7.937
17
0.1730
4.394
77
0.0180
0.457
21/64"
0.3281
8.333
18
0.1695
4.305
78
0.0160
0.406
11/32"
0.3437
8.729
19
0.1660
4.216
79
0.0145
0.368
23/64"
0.3593
9.126
20
0.1610
4.089
80
0.0135
0.343
3/8"
0.3750
9.525
21
0.1590
4.038
Decimal
(mm)
25/64"
0.3906
9.921
22
0.1570
3.987
Size
13/32"
0.4062
10.317
23
0.1540
3.911
Equiv.
Equiv.
27/64"
0.4218
10.713
24
0.1520
3.860
1.0mm
0.0394
1.000
7/16"
0.4375
11.112
25
0.1495
3.797
1.5mm
0.0591
1.500
29/64"
0.4531
11.508
26
0.1470
3.733
2.0mm
0.0787
2.000
15/32"
0.4687
11.904
27
0.1440
3.657
2.5mm
0.0984
2.500
31/64"
0.4843
12.301
28
0.1405
3.568
3.0mm
0.1181
3.000
1/2"
0.5000
12.700
29
0.1360
3.454
3.5mm
0.1378
3.500
30
0.1285
3.263
4.0mm
0.1575
4.000
Decimal
(mm)
31
0.1200
3.048
4.5mm
0.1772
4.500
Size
Equiv.
Equiv.
32
0.1160
2.946
5.0mm
0.1969
5.000
A
0.2340
5.943
33
0.1130
2.870
5.5mm
0.2165
5.500
B
0.2380
6.045
34
0.1110
2.819
6.0mm
0.2362
6.000
C
0.2420
6.146
35
0.1100
2.794
6.5mm
0.2559
6.500
D
0.2460
6.248
36
0.1065
2.705
7.0mm
0.2756
7.000
E
0.2500
6.350
37
0.1040
2.641
7.5mm
0.2953
7.500
F
0.2570
6.527
38
0.1015
2.578
8.0mm
0.315
8.000
G
0.2610
6.629
39
0.0995
2.527
8.5mm
0.3346
8.500
H
0.2660
6.756
40
0.0980
2.489
9.0mm
0.3543
9.000
I
0.2720
6.908
41
0.0960
2.438
9.5mm
0.374
9.500
J
0.2770
7.035
42
0.0935
2.374
10.0mm
0.3937
10.000
K
0.2810
7.137
43
0.0890
2.260
10.5mm
0.4134
10.500
L
0.2900
7.366
44
0.0860
2.184
11.0mm
0.4331
11.000
M
0.2950
7.493
45
0.0820
2.082
11.5mm
0.4528
11.500
N
0.3020
7.670
46
0.0810
2.057
12.0mm
0.4724
12.000
O
0.3160
8.026
47
0.0785
1.993
12.5mm
0.4921
12.500
P
0.3230
8.204
48
0.0760
1.930
13.0mm
0.5118
13.000
Q
0.3320
8.432
49
0.0730
1.854
R
0.3390
8.610
50
0.0700
1.778
S
0.3480
8.839
51
0.0670
1.701
T
0.3580
9.093
52
0.0635
1.612
U
0.3680
9.347
53
0.0595
1.511
V
0.3770
9.575
54
0.0550
1.397
W
0.3860
9.804
55
0.0520
1.320
X
0.3970
10.083
56
0.0465
1.181
Y
0.4040
10.261
57
0.0430
1.092
Z
0.4130
10.490
58
0.0420
1.066
59
0.0410
1.041
60
0.0400
1.016

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