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 5960-01-054-9639
NSN 2925-00-060-5423
NSN 6620-00-155-2608
NSN 6110-00-660-6615
NSN 7035-01-398-9581
NSN 5950-01-570-4438
NSN 5905-01-427-3804
NSN 6620-01-303-2563
NSN 6620-01-591-6681
NSN 5996-00-607-0362
NSN 5960-01-560-1958
NSN 5910-00-175-4948