The JCB 81900142 is a genuine OEM washer designed for use in a wide range of JCB agricultural, construction, and industrial machinery. This essential component ensures proper spacing and load distribution, preventing loosening and damage to assemblies. Manufactured to JCB's rigorous standards, it guarantees optimal performance and durability for critical fastening applications across models like the 3CX, 4CX, 530-70, 535-95, and many others. Always refer to your machine's parts catalog for exact fitment.