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
18-8 stainless steel provides good corrosion resistance and strength
Plain surface has no finish or coating
Flat head has an 82-degree cone-shaped bearing surface for use in countersunk holes and a flat top that fits flush with the mated surface
Star drive has a six-pointed indentation that provides a large contact area for the driver, resisting slippage better than a Phillips or slotted drive