Flange Bolts, Dimensional Standards ASME B18.2.1, Drive Hex, Drive Size 5/16 in, Fastener Length 1 in, Finish Zinc Plated, Flange Diameter 11/16 in, Flange Type Standard, Head Height 21/64 in, Head Width 1/2 in, Manufacturer Location Globally Sourced, Material Steel, Material Grade/Class Grade 5, Material Quality Standards SAE J429, Minimum Thread Length 1 in, Pack Size Bulk Pack, System of Measurement Inch, Tensile Strength 120,000 psi, Thread Size 5/16 In.-18, Thread Style Fully Threaded