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 5905-00-596-3283
NSN 5975-01-422-5102
NSN 6220-01-453-9038
NSN 5950-01-508-0521
NSN 5965-01-284-0124
NSN 5996-01-251-1149
NSN 5910-01-378-5550
NSN 6220-00-090-1310
NSN 5960-01-196-3344
NSN 6685-00-432-8795
NSN 5935-01-132-9834
NSN 5960-01-336-3130