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 5835-01-647-6426
NSN 5930-01-379-4082
NSN 7035-00-238-3662
NSN 5895-01-509-1853
NSN 6105-00-561-7169
NSN 6240-01-581-2000
NSN 5945-01-612-7148
NSN 6685-00-798-5211
NSN 5975-01-620-5055
NSN 5999-01-500-1329
NSN 5999-01-314-4033
NSN 5935-00-260-6051