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 6320-01-129-9656
NSN 2925-00-836-2323
NSN 5935-00-260-3305
NSN 6105-01-513-8653
NSN 6620-00-578-5851
NSN 5965-00-680-9749
NSN 5975-01-107-3947
NSN 5935-01-133-5966
NSN 5855-01-369-5037
NSN 5855-01-514-9857
NSN 6130-01-573-7665
NSN 5935-01-424-3313