hatch hardware part help

[briank]

I have began work on my 72 K5 and noticed on the rear bed sides where the metal hardtop bracket attaches to the body, the threaded insert has pulled out and are gone. Anybody know if I can buy something that would work from the hardware store. I have attached a picture of another 72 I had that shows the location of the part I am talking about but it is actually inside the bedside.