Tapping Sheet Metal Screw Head Type Truss Finish Plain Material 18-8 Stainless Steel Screw Size #12 Fastener Length 1 1/4 in Head Width 0.412 in Head Height 0.134 in Drive Size #3 Dimensional Standards ASME B18.6.3 For Maximum Material Thickness 1/8 in Pack Size Small Minimum Head Height 0.118 in Minimum Head Width 0.38 in Maximum Head Height 0.134 in Maximum Head Width 0.412 in System of Measurement Inch Drive Phillips Point Type AB