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 5835-01-447-2544
NSN 5855-00-179-8588
NSN 6105-01-120-3046
NSN 6145-01-593-9200
NSN 6110-01-415-9950
NSN 6105-01-004-1010
NSN 6110-00-467-6329
NSN 5965-01-121-2511
NSN 4140-01-234-8568
NSN 2925-00-620-7757
NSN 5975-01-389-7279
NSN 5835-01-069-8002