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 7035-00-232-4043
NSN 5905-00-631-7947
NSN 6150-01-027-1126
NSN 5945-00-919-0375
NSN 5999-00-228-2317
NSN 2925-01-333-6346
NSN 5895-01-272-8047
NSN 5960-01-599-9821
NSN 5945-01-290-4370
NSN 6240-01-360-0225
NSN 5920-01-054-7230
NSN 6130-00-042-7952