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 5910-00-495-4884
NSN 5945-01-291-9108
NSN 5925-00-230-7911
NSN 5925-01-466-9925
NSN 7035-00-096-9986
NSN 5905-01-377-5273
NSN 6320-01-170-4068
NSN 5945-01-131-3787
NSN 6650-01-265-2672
NSN 5920-00-947-7393
NSN 7035-00-104-7613
NSN 5960-00-116-7508