An electro-zinc plated washer in accordance with DIN 125 is used to distribute the load evenly when fastening bolts or screws. The washer is made of steel and has an electro-zinc plated surface treatment, which is aesthetically fine and shiny, but still intended for indoor use. Electro-zinc plated washers are used, for example, in construction, the machine industry and other industrial applications. They help protect the material and prevent the head of the bolt or screw from sinking into the surface.