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 2925-00-738-9065
NSN 5920-00-111-2375
NSN 6240-01-469-2957
NSN 5945-01-503-1545
NSN 5915-01-204-1763
NSN 5998-00-615-2763
NSN 6320-01-458-1853
NSN 5960-01-454-7064
NSN 5895-00-928-7371
NSN 5945-01-264-0673
NSN 6130-01-420-5965
NSN 5975-01-397-8557