Socket Flat Head Screw Head Type Flat System of Measurement Metric Drive Type Socket Drive Size 2.5 mm Material Steel Material Grade/Class Class 8 Finish Zinc Plated Thread Size M4-0.7 Minimum Thread Length 25 mm Fastener Length 35 mm Head Height 2.48 mm Head Diameter 8.96 mm Pack Size Small Pack Thread Style Fully Threaded Special Features Not Applicable Countersink Angle 90 Degrees Dimensional Standards ISO 10642 Flange Diameter Not Applicable