Flange Bolts, Dimensional Standards IFI-111, Drive Hex, Drive Size 1/2 in, Fastener Length 1 in, Finish Black Oxide, Flange Diameter 11/16 in, Flange Type Standard, Head Height 5/16 in, Head Width 1/2 in, Manufacturer Location Globally Sourced, Material Steel, Material Grade/Class Grade 8, Material Quality Standards SAE J429, Minimum Thread Length 7/8 in, Pack Size Small Pack, System of Measurement Inch, Tensile Strength 150,000 psi, Thread Size 5/16 In.-24, Thread Style Fully Threaded