Item needed is a top stationary pivot from a set of vinyl bifold doors. There is no manufacture or other identifying markings on the door or this part. The part completely fits into the top corner of one of the doors (as opposed to other bifold doors where the pivot is just a metal post that fits into a hole.) The item has cracked. Photos show both the item as it would be in the door and as it is now where the plastic has separated.
Actually, this is a spring loaded post.