Each screw is 3/4” in length and has a completely threaded shank. They have a broad, rounded head that is 5/16” across for number 2 square drivers, with a head height of approximately 1/8”. The head of the pan screw is painted black. The threaded shank is silver zinc. Use these on your next shed or cabin project as they are great for use in pocket holes. They are for use in all applications, including pressure treated lumber.