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 5930-01-457-5907
NSN 6685-01-418-7772
NSN 5855-00-361-0167
NSN 5925-00-246-4645
NSN 6645-01-481-5469
NSN 5985-01-442-6237
NSN 5925-01-299-7251
NSN 5999-01-357-7129
NSN 6150-01-447-3694
NSN 5960-01-438-0245
NSN 5935-01-313-7069
NSN 7035-00-300-3208