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: Threaded fasteners of aluminum
NSN 5960-01-425-1454
NSN 5925-01-642-1526
NSN 5855-00-165-3093
NSN 5999-00-141-1940
NSN 5990-01-004-6343
NSN 5910-01-178-9577
NSN 6145-00-691-3609
NSN 6145-01-026-1083
NSN 5895-01-059-0857
NSN 6145-01-039-2568
NSN 6320-01-428-9205
NSN 6150-00-369-0376