The Hillman Group 561036 12-14X1 HWH Drill Screw

Hex washer head neoprene washer. Zinc. 100-piece per package. 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.