Socket Set Screw Head Type Square Point Type Cup System of Measurement Inch Thread Size 1/2 In.-13 Overall Length 6 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