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 5925-01-353-5350
NSN 6645-01-538-5041
NSN 5910-00-840-7321
NSN 2925-00-791-8776
NSN 5915-01-382-9383
NSN 6240-00-635-9953
NSN 6320-00-882-7061
NSN 6650-01-571-0304
NSN 6145-01-024-8557
NSN 5930-00-549-0988
NSN 5855-00-896-4047
NSN 5835-01-218-5560