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 5925-01-569-0391
NSN 5965-01-651-5165
NSN 5945-01-464-0631
NSN 5960-01-181-2143
NSN 6650-01-414-4946
NSN 5835-01-589-4735
NSN 5920-01-634-0250
NSN 5945-01-132-9342
NSN 6145-00-598-9397
NSN 5999-00-350-2900
NSN 6110-01-090-5094
NSN 5930-01-220-6074