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 6130-00-216-7376
NSN 6620-00-900-3986
NSN 6650-00-471-1117
NSN 6150-01-645-3680
NSN 5965-01-082-0739
NSN 6645-01-442-6476
NSN 6145-01-196-3389
NSN 6645-01-280-5395
NSN 5945-00-636-9934
NSN 6645-01-279-2414
NSN 6135-01-620-7299
NSN 6610-00-202-5481