Socket Set Screw, Head Type Square, Point Type Cup, System of Measurement Inch, Thread Size 7/8 In.-9, Overall Length 4 in, Drive Type External Square, Drive Size 7/8 in, Material Steel, Finish Plain, Pack Size Small Pack, Dimensional Standards ASME B18.6.2, Head Height 0.678 in, Head Width 7/8 in, Maximum Head Height 0.678 in, Maximum Head Width 0.875 in, Maximum Temperature 302 Degrees F, Minimum Head Height 0.635 in, Minimum Head Width 0.852 in, Minimum Temperature -58 Degrees F