Self-Drilling Screw, #8 x 1-5/8 in, Zinc Plated Steel Truss Head Phillips Drive, 624 PK, Buildright, Mfr#: 51696

A self-drilling screw, or tek screw, is similar to a sheet metal screw, but it has a drill-shaped point to cut through the substrate to eliminate the need for drilling a pilot hole. Ideal for any project involving light gauge sheet metal, awnings, door and window frames, gutters, sheds.