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 6145-01-142-2234
NSN 5920-01-368-9237
NSN 6645-01-219-4492
NSN 6145-01-379-1168
NSN 5998-01-315-7393
NSN 5985-01-607-0291
NSN 6645-01-010-3746
NSN 6130-00-525-9975
NSN 5999-01-631-3276
NSN 6610-00-283-8047
NSN 6110-01-563-0238
NSN 6645-01-075-6498