Coating/Finish: Plain, Black Oxide, Hot Dip Galvanized, Mechanically Galvanized, Zinc Plated, Dacromet, Zinc Nickel Alloy, Ground Green Dye and Blue Dye and others
Flange: Serrated & Non-Serrated
Standard: ASME/ANSI B18.2.2-12Product name:ASME/ANSI 18.2.2-12 Hex Large Flange NutsSpecifications:1/4