Calculate the correct pilot hole size for wood screws
A pilot hole guides the screw and prevents splitting. The hole should be smaller than the screw's root diameter but larger than the threads.
| Screw | Pilot | Clear |
|---|---|---|
| #6 | 3/32" | 1/4" |
| #8 | 7/64" | 5/16" |
| #10 | 1/8" | 3/8" |
| #12 | 9/64" | 7/16" |