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. If you need to secure metal to metal, these Hillman No. 10 X 1 in. L Hex Washer Head Sheet Metal Screws are the perfect choice. The hex washer head provides a large bearing surface for improved load distribution, while the sharp threads ensure a secure grip. This package includes 100 screws, so you'll have plenty to get the job done.
