Tamper Resistant Screw Head Type Flat Material 18-8 Stainless Steel Finish Plain Drive Torx Thread Size #10-24 Fastener Length 1 1/2 in Head Width 0.411 in Head Height 0.127 in Drive Size T20 Dimensional Standards ASME B18.6.3 Pack Size Small Type Tamper Resistant Screw Maximum Head Width 0.411 in Minimum Head Width 0.359 in System of Measurement Inch Thread Type Coarse Package Quantity 10