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 6610-01-244-7192
NSN 6105-01-193-6575
NSN 6150-01-618-0223
NSN 6105-01-312-1481
NSN 6130-01-049-1532
NSN 5945-00-295-6847
NSN 6320-01-292-6635
NSN 7035-00-870-0290
NSN 5925-00-104-8310
NSN 5910-00-379-2349
NSN 5965-00-934-3495
NSN 6620-00-178-9643