#12 x 5-5/8 in. R4 Multi-Purpose Star Drive Flat Head Screw (50 per Pack)For use in wood, particle board, cement fiberboard, plastic, sheet metal Zip tip point eliminates the need to predrilled and provides easy starts into wood W cut thread design acts as a saw blade providing clean cuts through all wood and fibrous materials Both zip tip and w cut thread design help eliminate splitting of material CEE thread reduces torque and friction during screw in action Cutting pockets underneath head allow screw head to countersink