The McCormick 185688M1 washer is a genuine OEM component designed for various agricultural machinery, including McCormick, Massey Ferguson, Landini, David Brown, Case IH, Fiat, Ford, and New Holland tractors. This flat washer ensures proper spacing and load distribution, crucial for reliable assembly. With an inner diameter of 25.5 mm, an outer diameter of 40 mm, and a thickness of 2 mm, it meets precise specifications for critical applications.