1.Incoloy 825 special alloy fasteners bolt and nut 2.Standard:GB, ISO, DIN, ... :M6-M64(1/4-3inch) 1.Incoloy 825 special alloy fasteners bolt and nut 2.Standard:GB, ISO, DIN, BS ... Size:M6-M64(1/4-3inch) 1.Incoloy 825 special alloy fasteners bolt and nut2.Standard: GB, ISO, DIN, BS, ... JIS3,Size: M6-M100(1/4-4inch), also according to customers' reqquirements.4.Material: super duplex stainless steel, incoloy, ...