Used on grumman a10 aircraft
An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.
NSN 5990-01-554-4128
NSN 6110-01-244-7816
NSN 6650-00-726-4242
NSN 5925-01-509-5850
NSN 6610-01-381-3181
NSN 5915-01-089-7930
NSN 6320-01-513-9166
NSN 5990-00-174-6695
NSN 5985-00-688-3958
NSN 5990-01-472-2447
NSN 5996-01-362-0550
NSN 6105-01-584-3987