The McCormick 3534677M1 is a genuine OEM flat washer designed for various McCormick and Massey Ferguson agricultural machines. With an inner diameter of 20 mm, an outer diameter of 30 mm, and a thickness of 2 mm, this washer provides proper spacing and load distribution. It is crucial for secure assembly of components in demanding operational environments, ensuring optimal performance and durability in applications such as axles, transmissions, and engine assemblies.