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 5905-01-120-7736
NSN 6150-00-187-7287
NSN 7035-00-470-4977
NSN 5990-01-407-6615
NSN 6685-01-335-6670
NSN 6145-01-634-0388
NSN 6320-00-004-9158
NSN 5975-00-702-4062
NSN 6645-00-274-5670
NSN 6220-01-147-5320
NSN 5945-01-371-8912
NSN 6135-01-548-1423