Wood Screw Finish Zinc Yellow Material Steel Drive Phillips Screw Size #4 Fastener Length 1/2 in Head Width 0.225 in Head Height 0.086 in Drive Size #1 Threads per Inch 22 Thread Style Fully Threaded Minimum Thread Length Not Applicable Pack Size Small Maximum Head Width 0.225 in Minimum Head Width 0.195 in Maximum Head Height 0.086 in Minimum Head Height 0.075 in System of Measurement Inch Head Type Flat Point Type Not Applicable Dimensional Standards ASME B18.6.1