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 5910-01-426-8741
NSN 5835-01-457-7951
NSN 6240-01-107-6413
NSN 5990-00-932-3070
NSN 5835-01-416-6455
NSN 5895-00-717-8878
NSN 6685-00-891-5986
NSN 5930-01-517-9330
NSN 5935-01-477-6796
NSN 5925-00-764-1105
NSN 5975-00-549-9108
NSN 5905-00-650-2616