Bugle head, No. 2 Phillips drive. #6 fine thread, self-drill point. For attaching gypsum board to light gauge steel. Also suitable for wood and plastic applications. This screw is constructed of hardened steel which is the result of carbon steel being put through heat treatment, quenching, and further reheating making it extremely durable. Hardened Steel is more resistant to wear, corrosion, and abrasion. 1 lb box.