Power Pro Self-Drilling Lath Screws are highly versatile and are used to attach metal to wood, fiberglass, and plastic. The screws feature a self-drilling point that enables them to create holes in both thin and heavier gauge metals, while their sharp threads draw materials together for a secure hold. With a truss washer head that combines the protective function of a flat washer with a low profile, a Star/Torx drive to minimize slippage, and zinc plating for moderate rust and corrosion protection, these screws are highly effective and durable.