Socket Head Cap Screw Head Type Standard System of Measurement Inch Drive Type Socket Drive Size 3/4 in Material Steel Material Grade/Class Class 12.9 Finish Black Oxide Thread Size 1 In.-8 Minimum Thread Length 2 1/2 in Fastener Length 3 in Head Height 1 in Head Diameter 1.5 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