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 6650-01-577-1304
NSN 5935-01-572-3860
NSN 5999-00-288-5954
NSN 5935-00-972-8122
NSN 6220-00-613-6474
NSN 6240-00-261-8430
NSN 2925-01-587-3956
NSN 5920-00-156-9230
NSN 6685-01-481-7215
NSN 5895-00-548-9329
NSN 6145-01-476-8238
NSN 5895-00-001-3631