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 5895-01-383-4853
NSN 4140-00-138-8966
NSN 5985-01-214-8406
NSN 6650-00-482-8340
NSN 6145-01-188-9699
NSN 6650-01-533-6290
NSN 6135-00-733-9665
NSN 5960-00-054-7561
NSN 4140-01-122-9163
NSN 5915-01-446-7238
NSN 5920-01-082-7497
NSN 6110-00-258-8542