Self-Drilling Screw, #7 x 7/16 in, Black Phosphate Steel Pan Head Phillips Drive, 364 PK, Buildright, Mfr#: 54952

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.