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 5930-01-480-3764
NSN 6685-01-245-4462
NSN 6685-01-143-4622
NSN 5960-01-378-1729
NSN 7035-01-527-0136
NSN 5950-01-613-7839
NSN 6150-01-564-4509
NSN 2925-01-079-6229
NSN 6130-01-412-3824
NSN 6145-00-905-6797
NSN 2925-01-197-7864
NSN 5985-01-571-8515