Tamper Resistant Screw Head Type Button Finish Black Oxide Material Steel Screw Size #6 Fastener Length 1 in Head Width 0.512 in Head Height 0.073 in Drive Size 1/8 in Dimensional Standards ASME B18.6.4 Pack Size Small Minimum Head Height 0.063 in Maximum Head Height 0.073 in System of Measurement Inch Drive Hex Package Quantity 25