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 6110-00-998-1768
NSN 2925-00-295-8109
NSN 6620-01-411-8471
NSN 5905-01-547-4508
NSN 5895-01-502-9216
NSN 5835-01-555-4262
NSN 6220-00-981-9184
NSN 6105-01-053-9394
NSN 5950-01-056-5157
NSN 5905-01-525-7734
NSN 6610-01-269-1894
NSN 5945-01-343-8350