4 x 5/8 Phillips Flat Wood Screw Zinc Plated

4 x 5/8 Phillips Flat Wood Screw Zinc Plated . Carbon steel, zinc plated wood screws are tapered along the threaded portion of the shank for optimal holding power in wood. ;A smooth partial shank or shoulder helps prevent splitting and allows the screw to pull the two pieces of wood together for a tight fitting connection or joint.