Grade: 4.8, 8.8, 10.9, 12.9, Material: Q235, 35K, 45K, 40Cr, 20Mn Tib, 35Crmo, 42Crmo, Surface Treatment: Blackened, Electrogalvanized, Dacromet, Hot-dip Galvanized, Galvanized, etc!
A flange bolt is an integrated bolt composed of a hexagonal head and a flange plate (the gasket below the hexagon and the hexagonal fixing are integrated) and a screw (a cylindrical body with external threads), which needs to be matched with a nut and used to tighten the parts connecting two through holes.