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 5920-01-181-8210
NSN 5935-01-081-0849
NSN 7035-01-361-4176
NSN 6685-01-310-0584
NSN 5985-01-641-7440
NSN 6150-00-269-2211
NSN 5999-01-480-8580
NSN 5996-00-156-5967
NSN 6110-00-863-3855
NSN 6645-00-485-1440
NSN 6650-00-089-9423
NSN 6610-01-449-8906