Socket Head Cap Screw Head Type Standard System of Measurement Metric Drive Type Socket Drive Size 2.5 mm Material Steel Material Grade/Class Class 8 Finish Zinc Plated Thread Size M3-0.5 Minimum Thread Length 20 mm Fastener Length 20 mm Head Height 3 mm Head Diameter 5.5 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