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 5905-00-596-0322
NSN 6645-00-169-1527
NSN 6320-01-449-1014
NSN 2925-01-089-6269
NSN 6320-00-306-0124
NSN 5999-01-208-1765
NSN 5945-01-644-2398
NSN 5985-01-037-3514
NSN 6135-01-391-6515
NSN 5835-00-698-9824
NSN 5910-01-367-2738
NSN 5998-00-670-0369