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 5930-01-040-4329
NSN 5960-01-452-1907
NSN 6240-00-715-5118
NSN 2925-00-546-3129
NSN 5996-00-788-1218
NSN 5915-01-477-1890
NSN 5975-01-396-7329
NSN 6130-01-607-9281
NSN 6135-00-575-8942
NSN 5935-01-207-0849
NSN 6610-00-783-4703
NSN 5985-01-015-8445