The 3665353M1 is a genuine OEM washer, also known as a rondelle, manufactured for McCormick agricultural equipment. This high-quality flat washer ensures proper spacing and load distribution in various applications. Being an AGCO group part, it is cross-compatible with numerous Massey Ferguson, Valtra, and Fendt tractor models. Key dimensions include an inner diameter of 16.5 mm, an outer diameter of 28 mm, and a thickness of 2.5 mm, providing a precise fit for demanding agricultural environments.