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 5950-01-577-4950
NSN 5895-01-265-2547
NSN 6610-00-822-0431
NSN 5895-01-618-7032
NSN 5998-00-291-9081
NSN 6220-00-660-5539
NSN 5960-01-578-5537
NSN 5999-00-250-8256
NSN 6610-00-653-2812
NSN 5935-01-444-2432
NSN 5999-00-929-0015
NSN 6105-00-245-9715