Screw Size

Body Drill Size

Pilot Hole Size in Soft Woods

Pilot Hole Size in Hard Woods

4

1/8

1/16

5/64

5

9/64

5/64

3/32

6

9/64

5/64

3/32

8

11/64

3/32

7/64

10

3/16

7/64

1/8

12

7/32

1/8

5/32