Thread cutting screw with type F point has machine screw threads that taper down to a blunt edge and is suitable for heavy gauge sheet metal, aluminum, cast iron, brass, and plastic
Steel is often used in applications where strength is the primary consideration
Zinc plating resists corrosion and has a reflective appearance
Hex washer head has a serrated flange for additional grip on the mating surface that resists loosening and has six flat sides that a wrench can grip to turn from the side