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 5996-01-549-6387
NSN 6135-01-500-0572
NSN 5935-00-815-9817
NSN 6105-00-615-9979
NSN 6130-00-828-5635
NSN 5950-01-482-0834
NSN 5990-01-376-8930
NSN 6150-01-459-8026
NSN 5895-00-203-2379
NSN 7035-00-703-3535
NSN 6685-01-577-6405
NSN 6145-00-159-7743