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 5996-01-182-1125
NSN 5999-00-951-3896
NSN 5835-00-529-6307
NSN 6150-00-007-3486
NSN 6650-01-240-2334
NSN 6145-01-113-4148
NSN 5960-01-249-4550
NSN 5996-00-892-4190
NSN 5999-01-556-7420
NSN 6610-01-593-2428
NSN 6105-00-099-8818
NSN 5965-01-147-5847