Locking with groove
NSN 6105-00-156-4312
NSN 6650-00-889-6802
NSN 5920-00-633-0404
NSN 6150-00-655-2914
NSN 6110-01-183-9558
NSN 6150-01-332-6832
NSN 5999-01-174-8921
NSN 5960-01-272-9600
NSN 6150-00-737-2400
NSN 5990-01-443-2931
NSN 5855-01-280-9735
NSN 6105-01-431-5681