A tapping screw with spaced threads and a drill point which drills its own holes.
.hex driveHighly versatileCommon project applications: roofing, HVAC, steel stud framing, gutters and register vents Accepts hex wrench. Self-Drilling Screw, #10 x 3/4 in, Zinc Plated Steel Hex Head Hex Drive, 500 PK Has an indented top surface, 6-flat sides with a flat washer which project beyond the sides and provides a flat bearing surface.Zinc platedMaterial: steelSold in packs of 5005/16 in.