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 5950-01-220-6097
NSN 5930-00-868-2551
NSN 5905-01-648-4896
NSN 6320-01-519-8767
NSN 2925-01-575-3192
NSN 4140-01-024-9414
NSN 5996-01-429-0390
NSN 5965-00-670-2931
NSN 5930-00-584-3487
NSN 6240-01-029-8734
NSN 6320-00-164-4087
NSN 2925-00-964-7128