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 6110-00-715-9404
NSN 5950-01-431-9068
NSN 5998-00-466-0688
NSN 6105-01-218-4320
NSN 5985-01-254-2623
NSN 5905-00-664-4218
NSN 5855-00-361-0167
NSN 5895-00-111-4599
NSN 5950-01-615-4055
NSN 5895-01-584-0978
NSN 4140-01-179-0797
NSN 6240-01-541-5395