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 5905-01-398-5511
NSN 6145-01-276-9215
NSN 6135-01-557-9656
NSN 5985-00-382-7242
NSN 5855-01-222-1242
NSN 6685-01-634-0611
NSN 6135-00-874-6566
NSN 7035-01-332-9582
NSN 5935-01-634-0668
NSN 6650-00-035-9297
NSN 5935-00-854-8444
NSN 5925-00-915-1204