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 6645-01-624-7209
NSN 7035-00-312-3055
NSN 5905-00-716-0119
NSN 6150-01-449-2167
NSN 6105-01-085-5389
NSN 5985-00-581-2820
NSN 6135-01-255-9129
NSN 5960-01-063-6846
NSN 5965-01-643-4195
NSN 5960-00-136-7046
NSN 6620-01-139-6010
NSN 6240-01-094-7717