... -M64 Surface:plain,zp,balck,HDG Package:bulk and box 1) Different kinds of nuts available ,M3 to M30 to be ... .55.21110.733.12M81/1.256.56.141312.735.2M101/1.25/1.587.641716.7311.6M121.25/1.5/1.75109.641918.6717.3M141 ... steel black zinc plated hex nutMaterialCarbon steelFinishzinc platedSize1-1/8inch-1-1/2 inchThickness1.03inch-1.276inchStandardANSI B 18.2.2FactoryNingBo High quality zinc ...