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 5920-01-529-3785
NSN 2925-01-455-2558
NSN 6650-00-423-2178
NSN 6150-00-489-8285
NSN 5925-01-128-9524
NSN 6685-01-240-3428
NSN 6110-00-632-6078
NSN 4140-01-390-5258
NSN 5915-01-064-1145
NSN 6220-00-266-8222
NSN 5999-01-160-8946
NSN 6150-00-364-1948