Flange Bolts, Dimensional Standards DIN 6921, Drive Hex, Drive Size 8 mm, Fastener Length 20 mm, Finish Black Oxide, Flange Diameter 18 mm, Flange Type Standard, Head Height 8.1 mm, Head Width 13 mm, Manufacturer Location Globally Sourced, Material Steel, Material Grade/Class Class 10.9, Minimum Thread Length 20 mm, Pack Size Small Pack, System of Measurement Metric, Tensile Strength 145,038 psi, Thread Size M8-1.25, Thread Style Partially Threaded, Thread Type Coarse