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 5835-00-170-5238
NSN 5950-00-850-5184
NSN 5950-01-125-5374
NSN 5990-00-524-2293
NSN 5965-01-537-0023
NSN 5975-00-099-0045
NSN 6220-00-019-6300
NSN 5920-01-656-1612
NSN 6130-01-549-9543
NSN 5985-01-613-4081
NSN 5925-01-492-4782
NSN 7035-00-215-3272