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 5960-00-237-0125
NSN 5996-01-433-2265
NSN 6105-01-441-9312
NSN 5950-01-163-4040
NSN 5990-00-350-2352
NSN 4140-01-058-6603
NSN 5998-01-094-2079
NSN 6145-00-181-9622
NSN 5990-01-652-7373
NSN 6645-00-968-6118
NSN 5945-01-479-1235
NSN 6105-01-175-5531