The Hillman Group 47229 1/4-14-Inch x 3-Inch Washer Head Self Drilling Screw, 1-Pound

Description

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.