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 6645-01-245-8390
NSN 6105-01-391-2042
NSN 5990-00-953-9916
NSN 5920-01-527-0961
NSN 6105-01-436-8571
NSN 6610-00-138-2942
NSN 6240-01-028-2971
NSN 5990-01-270-3209
NSN 5996-01-303-8361
NSN 5975-00-356-4946
NSN 6135-00-128-1633
NSN 5935-01-385-1947