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 5999-01-472-0650
NSN 5996-00-363-9666
NSN 5945-01-452-4376
NSN 5915-01-429-8953
NSN 6130-00-983-9172
NSN 5935-01-025-1624
NSN 5998-00-042-5723
NSN 6240-00-284-1457
NSN 6685-01-242-6490
NSN 5950-00-251-4371
NSN 5915-00-024-0384
NSN 6240-01-619-3317