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 5945-01-010-1680
NSN 6650-01-052-8863
NSN 5855-00-221-9435
NSN 6320-01-078-8257
NSN 5996-01-365-2246
NSN 6320-01-425-1417
NSN 6610-00-598-5268
NSN 5935-01-442-3426
NSN 6135-01-384-7155
NSN 5996-00-119-5278
NSN 5910-01-167-3310
NSN 5975-00-004-9431