The Hillman Group 561039 12-14-Inch X 1-1/4-Inch Washer Head Neoprene Washer Self Drilling Screw 100-Pack

These self-drilling screws are used in wood fiberglass and metal and they possess a drill point enabling it to drill in its own hole in thin gauge steel. The sharp threads create their own mating thread when drilled into the material. No pre-drilled pilot holes necessary.