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 6105-01-463-2387
NSN 5945-00-857-2147
NSN 5975-01-390-7893
NSN 6650-00-526-6792
NSN 5895-00-284-4835
NSN 6620-00-529-6275
NSN 5990-01-416-1017
NSN 5925-00-329-9190
NSN 6610-01-571-1213
NSN 2925-01-058-1718
NSN 5996-01-298-6012
NSN 6620-01-353-9224