Thread Cutting screw:

Thread Cutting Screws, Indent Hex Wahser Head, Hi-low screw, w/ Type 25, Zinc Yellow plated Major diameter M3-M6 Length 1/2~4”

Thread Cutting Screws, Pozidrive, Flat Head with undercut, Machine screw with dog point, Type 23, Zinc plated Major diameter M3~M12 Length 1/2~6”