Tamper Resistant Screw Head Type Button Finish Black Oxide Material Steel Screw Size #10 Fastener Length 1/2 in Head Width 0.354 in Head Height 0.103 in Drive Size T25 Dimensional Standards ASME B18.6.4 Pack Size Small Minimum Head Height 0.091 in Maximum Head Height 0.103 in System of Measurement Inch Drive Torx Package Quantity 25