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 6685-01-513-9053
NSN 5920-00-979-6287
NSN 6220-01-487-3904
NSN 5960-00-032-9715
NSN 6240-01-516-7716
NSN 5990-01-206-8895
NSN 5960-00-529-2704
NSN 6150-01-310-9376
NSN 6105-00-336-3323
NSN 6110-01-645-4807
NSN 2925-01-440-7617
NSN 5999-00-545-8801