The McCormick 6518006M1 is a genuine OEM washer designed for reliable performance in agricultural and industrial machinery. This flat washer features an 18.5 mm inner diameter, a 32 mm outer diameter, and a 3 mm thickness, ensuring proper fit and secure fastening. It is a direct replacement for various OEM part numbers, including Massey Ferguson 330206X1, Case IH 330206X1, and Fiat 330206X1, making it suitable for a wide range of tractor models from brands like Case IH, Fiat, Ford, New Holland, and Steyr.