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 6610-01-268-8456
NSN 5915-01-222-0879
NSN 5910-01-465-2659
NSN 5895-01-512-3231
NSN 6110-01-657-7789
NSN 5960-01-190-2996
NSN 6105-01-030-7979
NSN 5975-01-012-7444
NSN 6220-01-399-6661
NSN 4140-00-155-8012
NSN 5996-01-226-5314
NSN 6130-00-528-1266