US Wood Screws - Nominal Sizes

Wood screws - nominal sizes vs. diameters. Reference data for shank diameters and recommended pilot holes.

Screw #Shank Diameter (inch)Pilot Hole (inch)
00.060.03
10.0730.04
20.0860.045
30.0990.052
40.1120.059
50.1250.067
60.1380.074
70.1510.082
80.1640.089
90.1770.097
100.190.104
120.2160.118
140.2420.132
160.2680.145
180.2940.158
200.320.172
240.3720.199
US Wood Screws - Nominal Sizes | MEPKit Engineering Tools | MEPKit