A tube coupling nut with the shank end accommodating a smaller tube size than is accommodated by the tube fitting which connects to the threaded end.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5965-01-197-6924
NSN 6110-00-141-1966
NSN 4140-01-579-1286
NSN 6105-01-383-0988
NSN 6150-01-524-4011
NSN 6650-01-585-6317
NSN 6685-01-449-0933
NSN 5855-01-657-7657
NSN 6645-00-900-5830
NSN 4140-01-276-0949
NSN 6240-01-327-4120
NSN 6105-01-468-5605