The McCormick 6524343M1 is a genuine OEM flat washer, essential for secure fastening in various McCormick agricultural machinery. With an inner diameter of 10.5 mm, an outer diameter of 20 mm, and a thickness of 2 mm, this washer ensures proper load distribution and prevents loosening of bolted connections. It is compatible with a wide range of McCormick tractors, including models from the CX, MC, MTX, XTX, and ZTX series, providing reliable performance and maintaining the integrity of critical assemblies.