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 5935-00-902-4893
NSN 5950-00-432-7708
NSN 5855-01-425-1330
NSN 5950-00-215-9161
NSN 5855-01-476-4219
NSN 5945-00-276-9274
NSN 7035-01-271-1643
NSN 7035-00-679-9027
NSN 5985-01-389-9497
NSN 5920-00-968-8004
NSN 5975-01-559-4879
NSN 6650-01-581-4368