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 6645-01-232-4843
NSN 5965-01-415-2898
NSN 5930-01-563-3490
NSN 5945-00-375-6131
NSN 5895-01-197-5747
NSN 6135-01-398-5922
NSN 4140-01-106-4604
NSN 6220-01-212-9016
NSN 2925-00-391-0331
NSN 5910-00-945-7312
NSN 6145-00-264-2137
NSN 6240-01-384-8802