The JCB 13400703Z is a genuine OEM self-locking nut designed for robust and secure fastening applications across various JCB equipment. Featuring a 3/4 UNF thread, this standard self-locking nut ensures components remain tightly secured, preventing loosening due to vibration or operational stress. Manufactured to JCB's stringent quality standards, it provides reliable performance and proper fitment for maintaining the integrity and safety of machinery.