Need to attach a piece of a 2x4 to a cargo van wall, but don't want to use self-drilling screws, everyone on the web recommends because I don't want to drill the walls. There's already plenty of existing factory holes in wall "beams". Is there a way to somehow put bolts in those existing holes, fix them in place, then drill a hole in the 2x4 and hold it with a nut?
There is a product "rivnut" that you can put in the hole, do up, and it locks itself into place... Like a rivet, but it has a thread and is thicker / larger.
Then you can just "bolt through" - make sure that the bolt does not push on the outer skin when it is done up though !