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 6150-01-056-4345
NSN 5925-01-604-8859
NSN 6620-01-148-0470
NSN 5996-01-597-8445
NSN 5950-01-352-3245
NSN 6320-01-323-7565
NSN 5905-00-060-5717
NSN 5910-01-220-0436
NSN 5905-00-857-9200
NSN 5835-01-632-6627
NSN 6685-01-522-6828
NSN 2925-01-283-6740