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 6240-00-081-6889
NSN 6645-01-466-9477
NSN 5935-01-628-6446
NSN 5915-01-460-8493
NSN 5998-01-251-3176
NSN 5835-01-235-5061
NSN 5996-01-592-4339
NSN 5996-00-470-5308
NSN 5998-00-141-9190
NSN 2925-01-588-3507
NSN 5985-01-425-4930
NSN 6645-01-461-9250