This self-drilling screw is for wood, fiberglass, and metal, and it possesses a drill point enabling it to drill its hole in thin gauge steel. The sharp threads create their mating thread when drilled into the material. With 100 screws in each pack, you'll have plenty to get the job done right. The hex washer head design is perfect for both home and professional use. The self-drilling feature helps make installation a breeze.
