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 6220-00-263-4893
NSN 6240-01-239-4218
NSN 2925-00-288-1394
NSN 5999-00-263-7874
NSN 5925-00-459-0827
NSN 5895-01-261-6457
NSN 5925-00-009-9818
NSN 6650-01-321-8823
NSN 5960-01-499-3544
NSN 6110-00-905-6148
NSN 6130-01-645-3904
NSN 6135-00-983-9187