The Claas 09691390 is a genuine OEM washer designed for critical applications in various Claas agricultural machinery, including ARION 400, 500, 600 series, AXION 800, 900 series, and XERION 4000, 4500, 5000 series tractors. This precision-engineered washer provides essential support for bolted connections, preventing loosening due to vibration and ensuring the longevity and reliability of components. With an inner diameter of 10.5 mm, an outer diameter of 20 mm, and a thickness of 2 mm, it meets stringent Claas specifications for fit and function.