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Wood Screw Installation
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  • American Wood Screw Installation Guide

  • Short Run Pro American Wood Screw Installation Guide

    The chart below will give the user the various dimensions for American Wood screws. All dimensions are in inches. The shank pilot hole is the one which will clear the thickest part of the screw body.

    Screwgauge 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
 
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