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 5950-01-593-6496
NSN 7035-01-506-4367
NSN 6685-00-527-7198
NSN 5998-01-005-0208
NSN 6150-01-356-8643
NSN 6105-01-102-0009
NSN 6645-00-538-2904
NSN 6220-01-616-9807
NSN 6650-01-014-9299
NSN 6150-00-901-3200
NSN 4140-01-176-2818
NSN 5935-01-017-5132