Tamper Resistant Screw Head Type Truss Material 18-8 Stainless Steel Finish Plain Drive Spanner Thread Size 5/16 In.-18 Fastener Length 1 in Head Width 0.698 in Head Height 0.183 in Drive Size #14 Pack Size Small Type Tamper Resistant Screw System of Measurement Inch Thread Type Coarse Package Quantity 10