Part Number: 2452-02NUT (Barrel nut self lock)Part Number: 5310-00-927-0082 (Barrel nut self lock)Part Number: 5310-01-809-7632 (Barrel nut self lock)Part Number: 5310-232-3542 (Barrel nut self lock)Part Number: 5310-809-7632 (Barrel nut self lock)Part Number: 5310-839-8766 (Barrel nut self lock)Part Number: 5310-927-0082 (Barrel nut self lock)Part Number: NAS577-B18A (Barrel nut self lock)Part Number: SL40-524SHUR-LOK (Barrel nut self lock)Part Number: SL408-4 (Barrel nut self lock)