Mixed Coatings

Fasteners are often produced in a range of coating options.  Coating affects the durability and cosmetic finish of a product. Below is a brief run through of the options available from us.

Black/Self Colour/Unplated

Black in colour, they are generally used on nuts, washers, screws and bolts that are most likely to be welded

Zinc Plating

The process that involves an electrolytic application of zinc to metal. This produces oxidation of the protected metal, and the zinc coating acts as a barrier to corrosion.

Bright Zinc Plated

The most common, silver looking, and provides effective corrosion protection on steel fasteners.

Zinc Black

A zinc plating is applied with a black passivate on steel fasteners to provide corrosion resistance and a cosmetic look for applications of the same colour.  There are a number of zinc alloy processes that are available; zinc-iron, zinc-cobalt, zinc-nickel, zinc-tin alloy.

Zinc Yellow Passivate (ZYP)

This coating is achieved using the same method as Zinc Black but with different alloys to achieve a particular cosmetic look.