Mount enclosure bolt help

I had a board built for me few years back that I am needing to fix the enclosure mounts and looking for some advice.

The front enclosure covering the wires was screwed into the board and has come loose stripping out. So I figured I would reattach the same was the weight bearing portion is attached. But I cant figure out what has been done.

The bolt pictured coming out of the board doesnt seem to have been drilled through from the other end. I pulled up the grip tape over one the bolts and the top of the board has no hole in it there.

How has this bolt been fitted to the board?