This genuine JCB part number 81150442 is an M12x45mm hex head bolt with a 1.75mm thread pitch and a grade of 8.8. Manufactured to JCB's high standards, this bolt ensures secure fastening and is a direct replacement for original components in a wide range of JCB agricultural and construction equipment, including 3CX and 4CX backhoe loaders, Loadall telehandlers, Fastrac tractors, and JS excavators.