Socket Set Screw, Head Type Headless, Point Type Cup, System of Measurement Inch, Thread Size 7/8 In.-9, Overall Length 2 1/2 in, Drive Type Socket, Drive Size 1/2 in, Material Alloy Steel, Finish Black Oxide, Pack Size Small Pack, Decimal Equivalent 0.5 in, Dimensional Standards ASME B18.3, Head Height Not Applicable, Material Quality Standards ASTM F912, Maximum Head Height Not Applicable, Maximum Point Diameter 0.53 in, Minimum Head Height Not Applicable, Minimum Point Diameter 0.502 in