Hex Head Cap Screw System of Measurement Metric Basic Material Steel Material Grade Class 8.8 Fastener Finish Zinc Yellow Dia./Thread Size M8-1.00 Fastener Length 40 mm Fastener Thread Direction Right Hand Fastener Thread Type Metric Fine Fastener Thread Style Fully Threaded Fastener Industry Standards ISO 8676 Head Type Hex Min Thread Length 40 mm Head Height 5.3 mm Head Width 13 mm Package Quantity 100