The McCormick 6633642A1 is a genuine OEM washer designed for critical applications in a wide range of McCormick, Landini, and Valpadana agricultural and industrial machinery. This precision-engineered component ensures proper spacing and load distribution, preventing wear and maintaining the integrity of bolted connections. With an inner diameter of 10.5 mm, an outer diameter of 18 mm, and a thickness of 2.5 mm, it is built to OEM specifications for reliable performance and durability.