Socket Head Cap Screw Head Type Standard System of Measurement Metric Drive Type Socket Drive Size 6 mm Material Steel Material Grade/Class Class 12.9 Finish Black Oxide Thread Size M8-1.25 Minimum Thread Length 20 mm Fastener Length 20 mm Head Height 8 mm Head Diameter 13 mm Pack Size Small Pack Thread Style Fully Threaded Special Features Not Applicable Countersink Angle Not Applicable Dimensional Standards DIN 912 Flange Diameter Not Applicable