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 6220-01-247-4380
NSN 6150-01-060-0443
NSN 6150-01-012-2185
NSN 5925-01-067-1248
NSN 5930-00-359-8891
NSN 6610-01-354-7963
NSN 6220-01-208-5556
NSN 6650-01-369-5433
NSN 5855-01-298-9835
NSN 5950-00-951-9554
NSN 5996-01-094-5587
NSN 5905-01-254-0841