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 6130-00-193-8962
NSN 5960-00-874-4857
NSN 5965-00-412-4402
NSN 5855-01-410-8979
NSN 6145-00-226-9499
NSN 6650-01-514-7809
NSN 5915-00-765-0558
NSN 6105-00-274-5460
NSN 5930-00-999-4401
NSN 6650-01-399-8552
NSN 6130-01-501-8519
NSN 5920-01-412-2540