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 6105-00-981-1335
NSN 5965-00-702-7257
NSN 6145-00-575-7190
NSN 5985-00-935-0127
NSN 5950-01-013-7751
NSN 5990-01-303-9920
NSN 5985-01-384-3847
NSN 5915-01-106-8549
NSN 5960-01-624-1170
NSN 5910-01-241-3538
NSN 5935-01-428-4470
NSN 6685-01-503-5062