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 5905-00-345-5373
NSN 6150-01-054-9747
NSN 6130-01-079-9847
NSN 5930-01-616-2215
NSN 5910-01-618-6407
NSN 6150-01-338-6154
NSN 5920-01-192-5535
NSN 5990-01-343-2187
NSN 5835-01-205-6614
NSN 4140-01-395-8430
NSN 2925-01-434-2502
NSN 5925-01-070-1120