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 6685-01-139-3729
NSN 5935-00-125-2449
NSN 5905-01-547-0054
NSN 7035-01-249-4547
NSN 5915-00-857-6309
NSN 6130-01-564-1902
NSN 5945-01-308-7948
NSN 5920-00-155-2173
NSN 6610-01-491-0869
NSN 5935-00-706-3743
NSN 6130-00-231-9443
NSN 5950-01-576-2123