Flange Bolts, Dimensional Standards ASME B18.2.1, Drive Hex, Drive Size 1/2 in, Fastener Length 2 in, Finish Zinc Plated, Flange Diameter 1 5/64 in, Flange Type Serrated, Head Height 1/2 in, Head Width 3/4 in, Manufacturer Location Globally Sourced, Material Steel, Material Grade/Class Grade 5, Material Quality Standards SAE J429, Minimum Thread Length 1 1/4 in, Pack Size Small Pack, System of Measurement Inch, Tensile Strength 120,000 psi, Thread Size 1/2 In.-13, Thread Style Partially Threaded