Hex Head Cap Screw, System of Measurement Metric, Basic Material Steel, Material Grade Class 8.8, Fastener Finish Zinc Yellow, Dia./Thread Size M18-1.50, Fastener Length 50 mm, Fastener Thread Direction Right Hand, Fastener Thread Type Metric Extra Fine, Fastener Thread Style Fully Threaded, Fastener Industry Standards DIN 961, Head Type Hex, Min. Thread Length 50 mm, Head Height 11.5 mm, Head Width 27 mm, Package Quantity 25