Self-Tapping Screws

#8 X 1/2 In. External Hex Washer Head Self-Drilling Screw Zinc (1,000 Per Pack)

Has an indented top surface, 6-flat sides with a flat washer which project beyond the sides and provides a flat bearing surface. Accepts hex wrench. A tapping screw with spaced threads and a drill point which drills its own holes. All self drilling...