This special washer is an original component for the rear three-point hitch of the host tractor. It sits between the linkage assembly and the retaining hardware, distributing clamping load across the mounting face to prevent deformation of the hitch structure. A worn or missing washer allows the fastener to embed into the casting, leading to loosening and accelerated wear at the pivot points. As an original AGCO part, the washer is manufactured to the same thickness and hardness as the factory component, ensuring the correct preload is maintained when the fastener is torqued to specification.