Flange Bolts Dimensional Standards IFI-111 Drive Hex Drive Size 5/8 in Fastener Length 1 in Finish Black Oxide Flange Diameter 15/16 in Flange Type Standard Head Height 29/64 in Head Width 5/8 in Manufacturer Location Globally Sourced Material Steel Material Grade/Class Grade 8 Material Quality Standards SAE J429 Minimum Thread Length 1 1/8 in Pack Size Small Pack System of Measurement Inch Tensile Strength 150 000 psi Thread Size 7/16 In.-20 Thread Style Fully Threaded