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 5965-01-332-6693
NSN 5998-01-141-2392
NSN 5915-01-105-7665
NSN 6240-01-497-7537
NSN 5905-00-882-9681
NSN 6240-01-003-8666
NSN 6610-01-580-3272
NSN 6620-00-701-1283
NSN 5985-01-570-7018
NSN 6610-00-989-8912
NSN 6130-01-024-7375
NSN 5960-01-515-4791