How to Determine Screw Lengths and Gauges

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Highpoint logo with a wooden plank graphic and text Screw Lengths and Gauges below
Diagram showing screw lengths up to 6 inches and gauges #4 to #14 with measurement guidelines for flat, pan, truss, and

This chart shows screw lengths ranging from 3/8" to 2-1/2".

How to Measure Screw Length
Flat Head Screws: Flat head screws are measured from the top of the head to the tip of the point.
Pan Head, Truss Head / Round Washer Head Screws: Pan head, truss head and round washer head screws are measured from the base of the washer to the tip of the point.

This chart shows lengths up to 6".

The Gauges chart shows #4 through #14

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