Self-Drilling Screw, #12 x 2-1/2 in, Zinc Plated Steel Flat Head Phillips Drive, 12 PK
Ideal for any project involving light gauge sheet metal, awnings, door and window frames, gutters, sheds.. 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.