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 5960-01-543-0235
NSN 6650-00-330-0108
NSN 5960-01-170-5932
NSN 6650-01-415-5573
NSN 6685-01-439-9342
NSN 6650-01-078-7732
NSN 5835-00-681-0005
NSN 5975-01-411-9347
NSN 5855-01-131-9336
NSN 5935-00-478-3067
NSN 5930-01-419-5808
NSN 5945-01-394-8377