Hillman
Hillman XL Zinc Hex Washer Head Self Drilling Screws - #8 X 1/2 in


$349
Sku: 4560641
This self-drilling screw is used in wood, fiberglass, and metal, and it possess a drill point enabling it to drill 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 are necessary.