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 6145-01-324-8357
NSN 5935-00-721-0725
NSN 5965-01-268-7322
NSN 5905-01-113-8242
NSN 5996-01-432-8216
NSN 6110-01-475-9130
NSN 5835-01-184-6878
NSN 6620-00-578-5851
NSN 6610-01-455-4977
NSN 5996-01-475-5728
NSN 5895-01-103-5216
NSN 6110-01-328-6777