Hex Head Cap Screw System of Measurement Metric Basic Material Steel Material Grade Class 8.8 Fastener Finish Plain Dia./Thread Size M60-5.50 Fastener Length 320 mm Fastener Thread Direction Right Hand Fastener Thread Type Metric Coarse Fastener Thread Style Partially Threaded Fastener Industry Standards DIN 931 Head Type Hex Min Thread Length 145 mm Head Height 38 mm Head Width 90 mm