Tamper Screw, Head Type Round, Material Steel, Finish Zinc Plated, Drive One-Way, Thread Size #8-32, Fastener Length 3/4 in, Head Width 0.309 in, Head Height 0.12 in, Drive Size #8, Dimensional Standards ASME B18.6.3, Pack Size Small, Type Tamper Screw, Maximum Head Width 0.309 in, Minimum Head Width 0.287 in, Maximum Head Height 0.12 in, Minimum Head Height 0.107 in, System of Measurement Inch, Thread Type Coarse, Package Quantity 100