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 6110-00-011-9591
NSN 5998-01-408-3698
NSN 6610-00-061-7882
NSN 5985-00-887-5831
NSN 6685-00-987-3696
NSN 6645-01-544-0408
NSN 5905-01-484-2695
NSN 5930-00-609-9342
NSN 5935-01-012-7903
NSN 5855-01-033-1375
NSN 5945-01-511-3894
NSN 5910-01-232-3447