Used on grumman a10 aircraft
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 5996-00-257-0059
NSN 6620-01-007-1057
NSN 6620-00-943-8020
NSN 6645-01-305-9135
NSN 6105-01-591-6694
NSN 5835-00-572-7445
NSN 5965-01-507-4318
NSN 5925-00-862-0142
NSN 5990-01-012-0613
NSN 6645-01-023-8020
NSN 5935-01-170-3290
NSN 6145-00-565-9560