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 5965-00-181-0213
NSN 6105-00-728-8612
NSN 6105-00-111-3353
NSN 6685-00-187-5890
NSN 6110-01-239-9319
NSN 5920-00-584-4592
NSN 6320-01-317-3663
NSN 6130-00-273-1111
NSN 6240-00-964-8864
NSN 2925-00-284-1534
NSN 6150-01-023-7710
NSN 5930-00-253-0665