End item: grumman a-10 aircraft
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 4140-00-343-2121
NSN 5905-01-634-0595
NSN 5945-00-927-6691
NSN 5945-01-456-2077
NSN 6610-01-106-5012
NSN 6620-01-197-7665
NSN 5930-01-430-3430
NSN 6150-00-885-3471
NSN 6110-01-245-2405
NSN 4140-01-390-0455
NSN 5985-01-296-4631
NSN 5895-01-025-9295