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 5930-00-077-1730
NSN 6320-01-033-6624
NSN 5999-01-384-6154
NSN 5985-01-656-8607
NSN 6320-01-449-1014
NSN 6220-00-157-5009
NSN 6130-01-033-3936
NSN 6320-01-250-0290
NSN 5925-01-193-0171
NSN 5895-01-593-7203
NSN 5855-01-199-2046
NSN 5985-01-495-0883