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 7035-01-552-5836
NSN 6150-01-218-6019
NSN 7035-01-406-5232
NSN 6320-01-134-5255
NSN 2925-00-183-4390
NSN 6105-00-337-0904
NSN 5945-01-135-2227
NSN 5975-01-454-2767
NSN 6145-00-105-4246
NSN 6645-00-711-5381
NSN 4140-00-058-9839
NSN 6685-01-158-7039