Tapping Sheet Metal Screw Head Type Oval Finish Plain Material 18-8 Stainless Steel Screw Size #4 Fastener Length 1 in Head Width 0.212 in Head Height 0.104 in Drive Size #1 Dimensional Standards ASME B18.6.3 For Maximum Material Thickness 3/64 in Pack Size Small Minimum Head Height 0.084 in Minimum Head Width 0.191 in Maximum Head Height 0.104 in Maximum Head Width 0.212 in System of Measurement Inch Drive Phillips Point Type AB