How to Use This Chart . Head diameters listed are standard for Flat Head and Oval-head screws . Round Head screws can be 5% to 10% smaller. When selecting the wood screw size and length that best suits your requirements, keep in mind that the threaded portion of a wood screw takes up approximately 2/3 of the total length of the screw leaving 1/3 for the shank and head. Wood Screw Specifications. #10 Bronze Wood Screws Flat Head Slotted. WOOD Magazine - http:\\here TRADITIONAL WOOD SCREWS PRODUCTION SCREWS 1/4 3/8 1/2 5/8 3/4 1 1 1/4 1 1/2 1 3/4 2 2 1/4 2 1/2 2 3/4 3 3 1/4 3 1/2 3 3/4 4 Gauge 23 4567 8 9 10 12 14 6 8 10 Head-Bore Size Shank-Hole Size Pilot-Hole Size Hardwood Softwood Available Lengths Phillips-Head Point Size Square-

SCREW SIZE . Nominal Size Basic Screw Diameter Actual Size . 0 0.0600 1 0.0730 2 0.0860 3 0.0990 4 0.1120 5 0.1250 6 0.1380 7 0.1510 8 0.1640 10 0.1900 12 0.2160 1/4 0.2500 5/16 0.3125 3/8 0.3750 Where specifying nominal size in decimals, zeros preceding decimal and in … Screw Dimensions . Maximum Head Diameters apply to Flat Head and Oval Head Wood Screws . Head sizes run 5% to 10% smaller in Round Head Screws . Number of Threads per inch is rounded to the nearest whole number; this is especially noticeable in the larger sizes . Lumber Sizing Chart . That's because hardwoods--unlike softwoods-aren 't cut and milled as dressed, sized lumber in standard nominal dimensions (2X4, 1X6, 4X4, etc.) to only be cut to length for construction. Instead, mills saw hardwoods into random widths and lengths to best take advantage of the clear wood in a log.

Wood Screw Sizing Chart * Shank Diameter is measured on the smooth portion of the screw above the threads. Working With Wood Screws - Common Sense Tips Use soap or wax to lubricate screws in hardwoods. Keep brass screw heads from twisting off. Use the same size steel screw to thread the wood , then insert the brass screw . SCREW SIZING. The 8 refers to the size (diameter) of the screw, and the 32 means it has 32 threads to the inch. The diameter is measured at the shank of the screw. Screws are sized by gauge number and length. For example, an 8 gauge screw with 32 threads per inch and 1 in length would be written as: 8-32 X …