Bolt Head Type Hex Washer Material Steel Finish Zinc Yellow Drive External Hex Thread Size M6 Fastener Length 16 mm Head Width 10 mm Head Height 4 mm Drive Size 10 mm Pack Size Small Washer Outside Diameter 18.5 mm Washer Thickness 1.588 mm Maximum Head Width 10 mm Minimum Head Width 9.525 mm System of Measurement Metric Thread Style Fully Threaded Thread Direction Right Hand Thread Type Coarse Package Quantity 50