Zinc Plated DIN934 Hexagon Nuts 1.Size:Dia M6-M42& ... grade:4.8/8/105.surface:balck phosphate, plain ,zinc Cr+3,,yellow zinc plated , H.D.G ,6.packing: bulk , ... or other special materials. For finishing, we provide black oxide, zinc electroplating, phosphate, copper plating, mechanical galvanization, hot dip galvanization ... about our company, you are welcomed to visit us. Zinc Plated din934 hexagonal nut