Socket Set Screw, Head Type Headless, Point Type Cup, System of Measurement Inch, Thread Size 5/8 In. -18, Overall Length 1/2 in, Drive Type Socket, Drive Size 5/16 in, Material Alloy Steel, Finish Black Oxide, Pack Size Small Pack, Decimal Equivalent 0.312 in, Dimensional Standards ASME B 18.3, Head Height Not Applicable, Material Quality Standards ASTM F912, Maximum Head Height Not Applicable, Maximum Point Diameter 0.371 in, Minimum Head Height Not Applicable, Minimum Point Diameter 0.347 in. This item has been restricted from sale in the following state (s): []