Socket Flat Head Screw Head Type Flat System of Measurement Metric Drive Type Socket Drive Size 10 mm Material Steel Material Grade/Class Class 10.9 Finish Black Oxide Thread Size M16-2 Minimum Thread Length 70 mm Fastener Length 80 mm Head Height 8.8 mm Head Diameter 33.6 mm Pack Size Small Pack Thread Style Partially Threaded Special Features Not Applicable Countersink Angle 90 Degrees Dimensional Standards DIN 7991 Flange Diameter Not Applicable