Great product - Prime-Line N 7192 Bi-Fold Door Repair Bracket for 1-3/8 inch Door (2-pack)
Amazon Product Link: Link: http://amazon.com/dp/B00E3NDVUQ/?tag=hanam...

Stamped steel bracket
Repairs bi-fold doors that have a split at either the top or bottom
Fits 1-3/8 inch thick doors
Accepts a 7/16 inch pivot
Top or bottom mount design
For further dimensional information, please see the line drawing
This bi-fold door repair bracket is constructed from steel. It is designed to repair doors that have split at the top or bottom pivot. This style bracket fits 1-3/8 in thick doors and accepts a 7/16 in pivot.

Top reviews from the United States
Inexpensive and Easy to Install
As a first-time homeowner with my wife, I am still a bit of a novice when it comes to repairs around our house. Our pantry door's top pivot screw recently sunk into the door, and after digging around YouTube, I found out about this product. It is an inexpensive repair kit that took me mere seconds to screw into the top of my pantry door, instantly fixing the issue with the pivot hole being too large. It comes in a pack of two as well so I have a spare!