Hedstrom Swing Set

that connects the bar that attaches across horizontally to the other two descended down to form an "A".

I do not know where u can find this article. I know that Hedstrom has closed its doors some time ago. What u can do is call a store in your area that brings together the swings and see if they can help U. They may have some parts around or at least can tell u who to contact to find it.