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 5925-01-411-3466
NSN 5999-01-271-4902
NSN 5935-01-500-5492
NSN 5999-01-502-9773
NSN 5990-01-281-3120
NSN 5935-00-153-3130
NSN 5985-01-304-6051
NSN 5999-00-599-8765
NSN 5996-01-149-2434
NSN 5996-01-216-5401
NSN 6130-00-202-4688
NSN 6145-01-246-3988