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 5910-00-466-8053
NSN 5950-00-970-1625
NSN 5990-01-345-1468
NSN 5920-01-089-7903
NSN 6620-01-577-6285
NSN 6240-00-204-0459
NSN 5925-00-361-8836
NSN 7035-01-151-0265
NSN 5930-01-501-8604
NSN 6130-00-557-7996
NSN 5996-01-025-5683
NSN 5835-01-384-3206