The Case IH 131729120 is a genuine OEM flat washer designed for secure fastening in agricultural and industrial applications. This robust washer, also used by New Holland and Steyr, features an inner diameter of 22mm, an outer diameter of 40mm, and a thickness of 3mm. It ensures proper load distribution and prevents loosening of bolted connections, making it a critical component for maintaining the integrity and performance of Case IH machinery, including Maxxum, Puma, Optum, Magnum, Quadtrac, and Steiger series tractors.