Flange Bolts Dimensional Standards DIN 6921 Drive Hex Drive Size 8 mm Fastener Length 50 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 22 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