Wood Screws

Shank diameters - pilot holes

Sponsored Links

Wood screws shank diameters and recommended pilot holes are indicated below.

wood screws

Shank holes and pilot holes is recommended to prevent wood from splitting and allows for tighter joints.

Size Number Shank Diameter Pilot Hole Diameter (in)
Decimal
(in)		 Nearest Fractional
(in)		 Softwood 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 5/32 5/64 3/32
9 0.177 11/64 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 5/16 11/64 13/64

 

Sponsored Links

Search the Engineering ToolBox

Related Topics

  • Miscellaneous - Miscellaneous engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more

Related Documents

Engineering ToolBox - SketchUp Edition - Online 3D modeling!

3D Engineering ToolBox - draw and model technical applications

Engineering ToolBox - SketchUp Edition - enabled for use with the amazing, fun and free Google SketchUp

Translate the Engineering ToolBox
About the EngineeringToolbox