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 6650-00-023-5054
NSN 5945-01-506-9548
NSN 4140-01-163-8796
NSN 5960-00-114-4916
NSN 5996-01-622-0076
NSN 6145-01-255-3630
NSN 2925-01-504-3058
NSN 5910-01-657-9795
NSN 5925-01-330-2362
NSN 5990-00-005-5215
NSN 6145-01-476-7554
NSN 5999-01-016-5328