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 2925-00-041-0439
NSN 6105-01-188-7292
NSN 5935-01-137-6666
NSN 5945-01-056-9002
NSN 6105-01-301-4678
NSN 5975-01-374-3803
NSN 5915-01-041-8314
NSN 6645-01-633-1852
NSN 5999-01-464-8451
NSN 5895-01-242-8097
NSN 5915-01-182-1365
NSN 6240-01-562-2185