Socket Flat Head Screw Head Type Flat System of Measurement Metric Drive Type Socket Drive Size 4 mm Material Steel Finish Blue Phosphate Thread Size M6-1 Minimum Thread Length 18 mm Fastener Length 50 mm Head Height 3.3 mm Head Diameter 12 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 Flange Thickness Not Applicable Package Quantity 10