This part is listed on JJCTEC’s hot-selling NOV Top Drive spare parts list under OEM Ref. 10830297-012, labeled as “SCOKET, AXIAL LOCK NUT.” It is engineered to ensure rig-safe mechanical locking, minimizing loosening under high vibration and dynamic loads typical of drilling operations. Its precise fit and material design contribute to the structural integrity and long-term reliability of Top Drive systems.