The McCormick 3428306M1 is a genuine OEM washer designed for a wide range of McCormick agricultural tractors, including CX, MC, MTX, X4, X5, X6, X7, XTX, and ZTX series models. This essential component provides secure fastening and proper spacing in various machinery applications. With an inner diameter of 22 mm, an outer diameter of 38 mm, and a thickness of 3 mm, it meets original equipment specifications for reliable performance and durability.