... service Nuts: DIN934/555/6915, ISO4034, ASTM 2H, IFI D-6, A563 1) Standard:DIN ,ASME,ASTM,ISO,JIS,GB 2 ... , S10,S12,S 2H, TBF6, TBF8.TBF10,TBF12, TBF 2H5) Grade: 6 , 8, 10 , 2H6) Finish:Plain Zinc Black H.D.G7 ... Hex nuts: DIN934/555/6915, ISO4034, ASTM 2H, IFI D-6, A563