Different shapes and materials of chipboard screws are common as well. The most common screws are made out of zinc, yellow zinc, brass, or black oxide. Popular heads are either pan, flat, or bugle. Screws may have Phillips or square screw drives.
Features:
1.Cutting ribs help the head countersunk.
Screw head ribs help reduce the thread being stripped when fixings hinges etc.Deeper recess for stronger bit hold.
2.Saw thread (serrated cutting teeth),SERRATIONS:Reduces driving in torque.Hard Synthetic coating for easy driving.Ultimate holding power.
Saw Thread - Gives better and faster cutting strength for the screw inside the material.
3.CUT POINT:
No Splitting even when working close to the edge.
No pre-drilling required even in hardwoods.
Screw point takes immediate hold.