Self-Drilling Lath Screws are highly versatile and are used to attach metal to wood, fiberglass, and plastic. The sharp threads draw material together and ensure a secure hold. The self-drilling point enables it to drill its own hole in thin sheet metal, heavier gauge metals, and other materials. | HILLMAN Project Center 100 Pieces Truss Washer Head Self Drilling Lath Screws | Size 8-32 x 1/2"