... double end thread) 2)Nut: M3-M64 3)washers: M3-M33 1. Treatment: cold forging/hot forging2. Materials option: Stainless Steel C276, 904L, 304 ... , 2205, 254SMO, AL6XN, 1. 4501, 1. 4529.Super duplex stainless steel F55, F51, F53 HastelloyB & C, Inconel, Incoloy etc.3. Standards ... BS EN, etc.4. Packing: Cartons then pallet, or wooden box, or by clients' requirements.5. Exported countries: United States, ...