Name: Square nut assembly partSquare NutStandard: ASME, ASTM, IFI, JIS, AS, DIN, ANSIMaterial: Low Carbon Steel, Alloy Steel, stainless steel, copper, etcSize: M5-M64 / 1/4"-3" or as drawingThread: M, UNC, UNF, BSWFinish: Plain, Black, Hot-dip Galvanizing, Zinc Clear, Zinc Yellow, Zinc Black, Copper Yellow.Surface: smooth,no burr,no undercutSpecification: DIN557, DIN562, DIN928, ASME/ANSI B 18.2.2Application: Mechanical Machine; Automobile and so onPackage: Plastic bag+carton or as customer's requirement.Trade term: FOB/CIF/EXW/CFRPayment: T/T,Western Union,paypal