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
