Tamper Resistant Screw Head Type Round Material 18-8 Stainless Steel Finish Plain Drive One-Way Thread Size 1/4 In.-20 Fastener Length 3/4 in Head Width 0.472 in Head Height 0.175 in Drive Size #14 Dimensional Standards ASME B18.6.3 Pack Size Small Type Tamper Resistant Screw Maximum Head Width 0.472 in Minimum Head Width 0.443 in Maximum Head Height 0.175 in Minimum Head Height 0.16 in System of Measurement Inch Thread Type Coarse Package Quantity 25