... 1.our factory produce nut and screw 2.DIN,BS, ANSI/ASME, ISO 3.m6-30x20-250mm Galvanized nut and screw gradestandardmaterialdiameterlengthsurface3.6(A ... (B)Swrch35k (F)CR6+zinc 1.ISO4014C)45# (G)dacromet 2.ISO4017 (C)BS (D)ANSI/ASME bolts and nuts1)product name: bolt2 ... .6,5.8,6.8,8.8,10.96)finish:zinc, black, plain,H.D.G.7) material :Carbon Steel,swrch35k ...