Drill Bit Conversion Chart Page 2

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Equivalent
Hole
Equivalent
Hole
Equivalent
Hole
Equivalent
Hole
Equivalent
Hole
E
Drill Size
Diameter
Drill Size
Diameter
Drill Size
Diameter
Drill Size
Diameter
Drill Size
Diameter
80
.0550"
54
.1285"
30
.2040"
6
.3281"
21/64"
.6250"
79
.0595"
53
.1360"
29
.2055"
5
.3320"
Q
.6406"
1/64"
.0625"
1/16"
.1405"
28
.2090"
4
.3390"
R
.6562"
78
.0635"
52
.1406"
9/64"
.2130"
3
.3438"
11/32"
.6719"
77
.0670"
51
.1440"
27
.2188"
7/32"
.3480"
S
.6875"
76
.0700"
50
.1470"
26
.2210"
2
.3580"
T
.7031"
75
.0730"
49
.1495"
25
.2280"
1
.3594"
23/64"
.7188"
74
.0760"
48
.1520"
24
.2340"
A
.3680"
U
.7344"
73
.0781"
5/64"
.1540"
23
.2344"
15/64"
.3750"
3/8"
.7500"
72
.0785"
47
.1562"
5/32"
.2380"
B
.3770"
V
.7656"
71
.0810"
46
.1570"
22
.2420"
C
.3860"
W
.7812"
70
.0820"
45
.1590"
21
.2460"
D
.3906"
25/64"
.7969"
69
.0860"
44
.1610"
20
.2500"
1/4"
.3970"
X
.8125"
68
.0890"
43
.1660"
19
.2500"
E
.4040"
Y
.8281"
1/32"
.0935"
42
.1695"
18
.2570"
F
.4062"
13/32"
.8438"
67
.0938"
3/32"
.1719"
11/64"
.2610"
G
.4130"
Z
.8594"
66
.0960"
41
.1730"
17
.2656"
17/64"
.4219"
27/64"
.8750"
65
.0980"
40
.1770"
16
.2660"
H
.4375"
7/16"
.8906"
64
.0995"
39
.1800"
15
.2720"
I
.4531"
29/64"
.9062"
63
.1015"
38
.1820"
14
.2770"
J
.4688"
15/32"
.9219"
62
.1040"
37
.1850"
13
.2810"
K
.4844"
31/64"
.9375"
61
.1065"
36
.1875"
3/16"
.2812"
9/32"
.5000"
1/2"
.9531"
60
.1094"
7/64"
.1890"
12
.2900"
L
.5156"
33/64"
.9688"
59
.1100"
35
.1910"
11
.2950"
M
.5312"
17/32"
.9844"
58
.1110"
34
.1935"
10
.2969"
19/64"
.5469"
35/64"
1.0000"
57
.1130"
33
.1960"
9
.3020"
N
.5625"
9/16"
56
.1160"
32
.1990"
8
.3125"
5/16"
.5781"
37/64"
3/64"
.1200"
31
.2010"
7
.3160"
O
.5938"
19/32"
55
.1250"
1/8"
.2031"
13/64"
.3230"
P
.6094"
39/64"
Metric Drill Size Conversion Chart

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