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 5915-00-714-3829
NSN 7035-01-010-4257
NSN 6150-01-175-8865
NSN 5975-01-507-0190
NSN 2925-00-464-7892
NSN 6320-01-541-7585
NSN 5999-00-317-2678
NSN 5950-01-158-1520
NSN 6110-01-575-6724
NSN 5895-01-221-3747
NSN 5975-00-260-1336
NSN 5920-00-206-3595