The countersunk head has a polygonal underside that mills its way into the wood and can therefore be countersunk without having to pre-drill the screw hole. The flat countersunk head sits flush with the surface.
Made from Hardened Steel
Multifunctional use indoors
Single Thread
Corrosion resistant
Universal Shank
4 Cut Point, to effectively reduce splitting
Ground Serrations, for faster, and more secure fastening
