Socket Head Cap Screw Head Type Standard System of Measurement Inch Drive Type Socket Drive Size 3/8 in Material Steel Material Grade/Class Class 12.9 Finish Black Oxide Thread Size 1/2 In.-13 Minimum Thread Length 1 in Fastener Length 1 in Head Height 0.5 in Head Diameter 0.75 in Pack Size Small Pack Thread Style Fully Threaded Special Features Not Applicable Countersink Angle Not Applicable Dimensional Standards ASME B18.3 Flange Diameter Not Applicable