Socket Set Screw, Head Type Square, Point Type Cup, System of Measurement Inch, Thread Size 1/2 In.-13, Overall Length 4 in, Drive Type External Square, Drive Size 1/2 in, Material Steel, Finish Plain, Pack Size Small Pack, Dimensional Standards ASME B18.6.2, Head Height 0.389 in, Head Width 1/2 in, Maximum Head Height 0.389 in, Maximum Head Width 0.5 in, Maximum Temperature 302 Degrees F, Minimum Head Height 0.361 in, Minimum Head Width 0.484 in, Minimum Temperature -58 Degrees F