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 2925-01-180-7793
NSN 5920-01-171-8506
NSN 5975-01-526-8910
NSN 2925-00-786-6227
NSN 5905-00-274-3789
NSN 6320-01-600-5808
NSN 5915-01-296-0589
NSN 6610-00-999-1528
NSN 6240-01-529-6624
NSN 5905-00-148-5162
NSN 5930-00-839-1380
NSN 5965-00-412-4402