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 5985-01-061-8512
NSN 6220-01-654-9214
NSN 5920-01-513-0961
NSN 5930-01-427-3676
NSN 5910-00-116-6535
NSN 5998-01-010-0268
NSN 7035-01-223-0104
NSN 5965-01-107-8549
NSN 6135-01-282-4326
NSN 6650-01-143-4586
NSN 5925-01-272-2984
NSN 7035-00-941-4949