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 6645-01-069-3286
NSN 5905-01-163-7921
NSN 5950-01-510-8420
NSN 5835-00-603-6661
NSN 6105-01-605-0139
NSN 5965-01-360-6568
NSN 5920-00-616-4087
NSN 6135-00-112-8637
NSN 5910-01-366-0392
NSN 4140-01-606-9953
NSN 5996-00-281-4500
NSN 5925-00-660-7589