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 6610-01-014-3964
NSN 5965-01-626-2130
NSN 2925-01-468-7073
NSN 5920-01-306-8753
NSN 6645-01-471-4960
NSN 6105-01-548-1656
NSN 5895-01-430-3887
NSN 6685-01-432-2579
NSN 6620-00-079-0311
NSN 6110-01-454-4975
NSN 6150-01-153-8563
NSN 6130-01-282-4486