This self-drilling screw is for wood, fiberglass, and metal. These screws possess a drill point enabling it to drill its hole in thin gauge steel. The sharp threads create their mating thread when drilled into the material. Hillman No. 10-16 X 1/2 in. L Phillips pan head self-drilling screws come in a 100-pack. These screws are built to last as they are from high-quality steel and are good for any indoor and outdoor projects.
