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 7035-00-938-1505
NSN 7035-01-344-8708
NSN 5985-01-503-0662
NSN 6610-01-168-7943
NSN 5895-01-524-2677
NSN 5930-01-435-6542
NSN 6240-00-409-8670
NSN 6620-00-450-9995
NSN 6150-01-052-9020
NSN 6145-00-836-2991
NSN 6145-00-834-2676
NSN 5910-01-284-0097