Sheet Metal Screw Head Type Pan Finish Zinc Plated Material Steel Screw Size 1/4 in Fastener Length 1/2 in Head Width 0.477 in Head Height 0.19 in Drive Size #3 Dimensional Standards ASME B18.6.3 Pack Size Small Minimum Head Height 0.208 in Minimum Head Width 0.442 in Maximum Head Height 0.19 in Maximum Head Width 0.477 in System of Measurement Inch Drive Phillips Package Quantity 100