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 5950-01-497-0474
NSN 5985-01-072-8568
NSN 5925-01-571-0564
NSN 6135-01-432-2785
NSN 5920-01-624-1102
NSN 5855-01-549-3666
NSN 6130-01-441-2618
NSN 6685-00-235-3492
NSN 5960-01-567-1096
NSN 5935-00-218-5845
NSN 5950-01-551-1202
NSN 6105-01-521-7889