The Fastenal General Purpose Flat Washer is the perfect choice for any fastening job. Made from top quality, medium carbon steel, this Grade-8 hardened construction ensures exceptional durability and reliable performance. The yellow zinc coating provides moderate corrosion resistance, ensuring a precise fit for efficient and secure fastening. With its superior construction and corrosion resistance, this washer is sure to provide long-lasting performance. FleetPride is your First Click in Heavy Duty®.