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 6150-01-366-9992
NSN 7035-01-326-0868
NSN 6150-01-023-1516
NSN 5930-00-974-6068
NSN 5925-01-347-0358
NSN 6220-01-116-2411
NSN 5905-01-583-5428
NSN 6620-00-244-8020
NSN 5960-00-575-5116
NSN 5930-01-511-5048
NSN 5925-01-224-7940
NSN 5920-01-096-8815