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 5985-01-628-6478
NSN 6645-00-539-1705
NSN 6610-00-371-1897
NSN 5998-00-276-8599
NSN 5915-00-301-3818
NSN 4140-00-826-8534
NSN 5910-01-645-1011
NSN 5985-01-642-4707
NSN 5998-01-609-6622
NSN 5965-01-312-1630
NSN 5996-00-151-4462
NSN 5910-01-471-8338