1 in. USS Flat Washer Zinc (Model FW1)

The Bolt Depot USS flat washer is made from low carbon steel and features a zinc plating for moderate corrosion resistance. With an outside diameter of 3-1/4" and an inside diameter of 1-1/2", this washer is designed to spread the load of a bolt or screw over a larger area and help prevent loosening under vibration. It meets the ASME B18.21.1 Dimensional standard.

Key Features

• Used to spread the load of a bolt or screw over a larger area.
• Helps prevent loosening under vibration.