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 6240-01-537-1176
NSN 5950-01-095-0818
NSN 6145-00-299-7757
NSN 6645-01-182-4896
NSN 6620-01-412-5514
NSN 5915-01-627-0242
NSN 5835-00-227-7909
NSN 6105-01-435-4376
NSN 5935-01-510-1986
NSN 6645-01-481-9834
NSN 6130-01-414-8530
NSN 5998-00-151-8282