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 6620-00-087-7930
NSN 5905-00-998-9230
NSN 5910-01-617-4826
NSN 5996-00-222-4930
NSN 6320-01-177-3192
NSN 6685-01-013-1053
NSN 5835-00-922-1263
NSN 6320-01-239-7647
NSN 6145-01-313-4323
NSN 6240-00-733-2984
NSN 6110-01-331-6957
NSN 5895-00-141-9127