HEX NUTS STANDARD:DIN555 DIN934 DIN936 BS916 ANSI IFI D-5/D-12 D-8/D-14 GRADE:4,5,8,10,12 HEX NUTSSTANDARD:DIN555 DIN934 DIN936 BS916 ANSI IFI D-5/D-12 D-8/D-14GRADE:4,5,8,10,12FINISH:PLAIN,BLACK HOT DIPPED GALVANIZED ZINC PLATED,SHERARDIZED MECHANICIAL ZINC ZINC PLATED DIN934 HEXAGON NUTS