The McCormick 3664713M1 is a genuine OEM washer, precisely engineered for secure fastening and optimal performance in a wide range of agricultural machinery. This essential component is utilized across McCormick, Massey Ferguson, Fendt, and Valtra tractors, ensuring compatibility and reliability. With an inner diameter of 25.5 mm, an outer diameter of 40 mm, and a thickness of 3 mm, this washer provides a precise fit for critical assemblies, contributing to the longevity and efficient operation of your equipment.