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 5996-00-071-5946
NSN 6610-00-960-9135
NSN 2925-00-103-6822
NSN 6110-01-523-3095
NSN 5999-01-153-1782
NSN 5950-01-014-5589
NSN 5965-01-356-1717
NSN 6650-01-656-0491
NSN 5905-00-139-2309
NSN 5950-01-104-0427
NSN 5999-01-591-4525
NSN 5965-01-443-4749