Related Resources: hardware
Pilot Holes for American Wood Screws
These dimensions are for standard American wood screws, which are tapered. They are not suitable for screws which are not tapered, such as dry wall screws. All dimensions are in inches. The shank pilot hole is one which will clear the thickest part of the screw body.
|
Screw Gage # |
Body Dia. |
Shank Pilot Hole |
Pilot hole in Softwood |
Pilot Hole in Hardwood |
| 0 | 0.060 | 1/16 | 1/64 | 1/32 |
| 1 | 0.073 | 5/64 | 1/32 | 1/32 |
| 2 | 0.086 | 3/32 | 1/32 | 3/64 |
| 3 | 0.099 | 7/64 | 3/64 | 1/16 |
| 4 | 0.112 | 7/64 | 3/64 | 1/16 |
| 5 | 0.125 | 1/8 | 1/16 | 5/64 |
| 6 | 0.138 | 9/64 | 1/16 | 5/64 |
| 7 | 0.151 | 5/32 | 1/16 | 3/32 |
| 8 | 0.164 | 11/64 | 5/64 | 3/32 |
| 9 | 0.177 | 3/16 | 5/64 | 7/64 |
| 10 | 0.190 | 3/16 | 3/32 | 7/64 |
| 11 | 0.203 | 13/64 | 3/32 | 1/8 |
| 12 | 0.216 | 7/32 | 7/64 | 1/8 |
| 14 | 0.242 | 1/4 | 7/64 | 9/64 |
| 16 | 0.268 | 17/64 | 9/64 | 5/32 |
| 18 | 0.294 | 19/64 | 9/64 | 3/16 |
| 20 | 0.320 | 21/64 | 11/64 | 13/64 |
| 24 | 0.372 | 3/8 | 3/16 | 7/32 |
Related
Related
- Wood Screw Pullout Withdraw Resistance Force Formulae and Calculator
- Lag Screws in Wood Pullout Resistance Force Formulae and Calculator
- Holding Power of Wood Screws
- ANSI Wood Screws Table #2
- ANSI Wood Screws per. ANSI B18.6.1
- Pilot Hole Drill Sizes Wood Screws
- Screws Fastener in Particle Board Maximum Torque and Pullout Withdraw Resistance Force Formulae and Calc
- Allowable Loads and Stress in Wood Formulae and Calculator
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