... fastener field 1,Name: Steel embossing square nut;Steel square nut;Embossing square nut Embossing2,For the similar square nut ,what can we do ... the surface finish: ElectroplateZinc plated(while,colour,dacroment),Nickel plated,copper plated,gold plated,chrome(3+Rohs &6+ ) plated,anodic oxidation ...