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 6620-01-381-5482
NSN 5996-00-973-4179
NSN 5930-01-325-8300
NSN 5990-01-013-8464
NSN 6150-01-102-5844
NSN 6110-01-245-2405
NSN 5975-00-906-6299
NSN 6135-00-932-3136
NSN 5996-01-621-3806
NSN 5960-01-570-8605
NSN 5920-00-925-2639
NSN 5935-01-310-5709