Our self-tapping screws are specially designed for Pocket-Screw Joinery. They feature a self-tapping auger point that eliminates pre-drilling and a fl at head that seats flush in the bottom. Our screws utilize a #2 square drive recess to reduce cam-out. Industrial quality steel is first case-hardened and then coated with a dri-lube finish which reduces driving torque. Pan-Head screws feature a slightly smaller size - in both shank diameter and head size - for hard woods.