Socket Set Screw, Head Type Headless, Point Type Cup, System of Measurement Inch, Thread Size 7/8 In.-9, Overall Length 4 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, Maximum Head Height Not Applicable, Maximum Temperature 302 Degrees F, Minimum Head Height Not Applicable, Minimum Temperature -58 Degrees F