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 5950-01-025-5826
NSN 6240-01-484-4288
NSN 5920-01-541-0443
NSN 6620-01-353-6675
NSN 5998-01-490-5106
NSN 6110-01-501-1913
NSN 5950-01-127-7345
NSN 6110-01-620-6559
NSN 6610-01-149-1465
NSN 2925-00-953-2920
NSN 6110-00-837-2282
NSN 6145-01-126-7273