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 6620-01-657-6296
NSN 5910-01-512-3427
NSN 5945-01-382-8925
NSN 6145-01-510-3352
NSN 6645-01-312-3558
NSN 6110-00-233-8121
NSN 6645-00-754-4108
NSN 6145-01-381-5589
NSN 4140-01-591-3344
NSN 6220-00-800-3221
NSN 5950-01-431-9068
NSN 5910-00-256-3014