The Claas 0013007040 is a genuine OEM Belleville washer, also known as a conical spring washer, designed to provide a spring force and maintain tension in bolted joints. This washer features an outer diameter of 32 mm, an inner diameter of 16.2 mm, and a thickness of 2.5 mm. It is a critical component for ensuring secure fastening and preventing loosening due to vibration or thermal expansion in a wide range of Claas agricultural machinery, including LEXION combines, JAGUAR forage harvesters, AXION, ARION, and XERION tractors.