Hardened washers go through a heat treatment process with the intent to make the metal harder. Not recommended for use with a low carbon steel bolt. Ideal for applications requiring a smooth bearing surface or maintaining fastener tension.

• Material: Available in heated-treated/alloy steel
• Size range: From 1/4″to 3″ diameter bolt size, metric to custom
• Finishes: plain, plated, galvanized or custom
• Options: Multiple inside and outside diameters available