Drill Sizes; Decimal Equivalents - Pontiac Grand Prix Service Manual

GENERAL INFORMATION A N D LUBRICATION
0-9
DRILL SIZES
Letter
Sizes
Z
Y
X
W
V
U
T
S
R
Q
P
0
N
M
L
K
J
I
H
G
F
E
D
C
B
A
DECIMAL EQUIVALENTS
1/64
. .
.
.
.015625
1/32
. . .
.
.03125
3/64
. . . .
.046875
1/16.
. . .
.0625
5/64
. . .
.
.078125
3/32
. . .
.
.09375
7/64..
.
.
.lo9375
1/8
. .
.
.
.I25
9/64..
. .
,.I40625
5/32
.
. . .
.I5625
11/64
.
.
.
.
.I71875
3/16
.
. . .
.I875
13/64..
.
.
.203125
7/32
. .
. .
. 2 187 5
15/64
.
. .
,
.234375
1/4
. . . .
.25
Drill
Diameter
Inches
0.413
0.404
0.397
0.386
0.377
0.368
0.358
0.348
0.339
0.332
0.323
0.316
0.302
0.295
0.290
0.281
0.277
0.272
0.266
0.261
0.257
0.250
0.246
0.242
0.238
0.234
17/64
. . .
.
.265625
9/32
. . . .
.28125
19/64
. .
. .
.296875
5/16
. . . .
.3125
21/64
. . . .
.328125
11/32
. .
. .
.34375
23/64..
.
.
.359375
3/8
. . .
.
.375
25/64..
. .
.390625
13/32
. . . .
.40625
27/64
.
. .
.
.421875
7/16
. . . .
.4375
29/64..
.
.
.453125
15/32
. . .
.
.46875
31/64
. .
.
.
.484375
1/2
.
.
. .
. 5
Wire
Gage
Sizes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2 1
2 2
23
24
25
26
2 7
33/64
. .
. .
.515625
17/32
. . . .
.53125
35/64
. . . .
.546875
9/16
.
.
. .
.5625
37/64
. . . .
.578125
19/32
.
. .
.
.59375
39/64..
. .
.609375
5/8
. .
.
.
.625
41/64..
.
.
.640625
21/32
.
.
.
.
.65625
43/64
.
. . .
.67 1875
11/16
.
. . .
.6875
45/64.
. . .
.703125
.23/32
.
. .
.
.7 1875
47/64
. .
.
.
'
.734375
3/4
. . . .
.75
Drill
Diameter
Inches
0.2280
0.2210
0.2130
0.2090
0.2055
0.2040
0.2010
0.1990
0.1960
0.1935
0.1910
0.1890
0.1850
0.1820
0.1800
0.1770
0.1730
0.1695
0.1660
0.1610
0.1590
0.1570
0.1540
0.1520
0.1495
0.1470
0.1440
49/64
.
. . .
.765625
25/32
. . . .
.78125
51/64
.
.
. .
.796875
13/16.
.
.
.
.8125
53/64
. . . .
A28125
27/32
. . . .
.84375
55/64..
. .
.859375
7/8
. .
. .
,875
57/64..
. .
,890625
29/32
.
. .
.
.go625
59/64
.
.
. .
.921875
15/16
. .
.
.
.9375
61/64..
. .
.953125
31/32
. . .
.
.96875
63/64
. . . .
.984375
I . . . . 1 .
Wire
Gage
Sizes
2 8
29
3
0
3 1
3 2
33
3 4
35
3 6
37
38
3 9
40
4 1
42
43
44
45
46
47
48
49
50
51
52
53
54
Drill
Diameter
Inches
0.1405
0.1360
0.1285
0.1200
0.1160
0.1130
0.1110
0.1100
0.1065
0.1040
0.1015
0.0995
0.0980
0.0960
0.0935
0.0890
0.0860
0.0820
0.0810
0.0785
0.0760
0.0730
0.0700
0.0670
0.0635
0.0595
0.0550
Wire
Gage
Sizes
5
5
56
57
58
59
60
61
62
63
64
65
66
67
68
6 9
7 0
7 1
7 2
73
74
75
7 6
77
78
7 9
80
Drill
Diameter
Inches
0.0520
0.0465
0.0430
0.0420
0.0410
0.0400
0.0390
0.0380
0.0370
0.0360
0.0350
0.0330
0.0320
0 . 0 3 ' 1 0
0.0292
'
*
0.0280
0.0260
0.0250
0.0240
0.0225
0.0210
0.0200
0.0180
0.0160
0.0145
0.0135