FASTENER HOLE GUIDE
DRILL THIS SIZE HOLE
DRILL SIZE
56
54
53
52
50
49
47
45
44
43
42
40
38
37
35
34
33
31
1/8
30
29
28
27
26
25
23
22
21
18
16
14
13
10
7
4
3
7/32
1
F
I
9/32
5/16
21/64
3/8
25/64
27/64
7/16
29/64
15/32
31/64
DECIMAL
EQUIVALENT
.0465
.0550
.0595
.0635
.0700
.0730
.0785
.0820
.0860
.0890
.0935
.0980
.1015
.1040
.1100
.1110
.1130
.1200
.1250
.1285
.1360
.1405
.1440
.1470
.1495
.1540
.1570
.1590
.1695
.1770
.1820
.1850
.1935
.2010
.2090
.2130
.2187
.2280
.2570
.2720
.2812
.3125
.3281
.3750
.3906
.4219
.4375
.4531
.4687
.4844
TO TAP FOR THIS
SIZE SCREW
0 x 80
1 x 56
1 x 64-72
2 x 56-64
3 x 48
3 x 56
4 x 36
4 x 40
4 x 48
5 x 36
5 x 40
5 x 44
6 x 32
6 x 36
6 x 40
7 x 36
8 x 30
8 x 32-36
8 x 40
9 x 30
3/16 x 24
10 x24
10 x 28
10 x 30
10 x 32
12 x 24
12 x 28
12 x 32
14 x 20
1/4 x 20
1/4 x 24
1/4 x 28
1/4 x 32
5/16 x 18
5/16 x 24
5/16 x 24-32
3/8 x 18
3/8 x 20-24
7/16 x 14
7/16 x 20
1/2 x 12-13
1/4" Pipe
1/2 x 20-24
1/2 x 27
9/16 x 12
FOR THIS SIZE PILOT
IN HARD WOOD
No. 3
No. 4
No. 5
No. 6
No. 7
No. 8
No.9
No.10
No.11
No. 12
No. 14
No.16
No. 18
No. 20
No. 24