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 5990-00-481-0787
NSN 6650-01-585-6317
NSN 6220-00-847-1520
NSN 5855-00-156-4993
NSN 5985-01-249-8051
NSN 5905-00-864-7759
NSN 5920-00-269-4060
NSN 5965-01-359-0384
NSN 5910-00-722-0281
NSN 7035-01-160-4423
NSN 7035-01-160-4423
NSN 5895-01-323-6413