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 5950-00-193-8769
NSN 5975-00-064-8685
NSN 6110-01-303-5837
NSN 6240-01-145-3931
NSN 5990-01-079-3271
NSN 6150-01-371-5578
NSN 5945-00-244-1212
NSN 6110-01-030-8283
NSN 5996-00-618-0050
NSN 6240-00-087-1731
NSN 6240-01-303-6174
NSN 5999-01-333-7977