threaded

I'm working on the cooling system in my 3-FE - FJ62. I removed the studs while replacing my water pump, replaced everything with new parts, and reassembled everything. When I tried to tighten the studs, one of them turned loose and threaded the block. I'm not sure how bad it is, anyone have...

Finishing a job a tree on the trail started and going about completely de-flaringy LX450. Unsure what to do with these threaded inserts that are in the sheet metal? The plastic clips were easy enough to pop out but what to do about these? The plan is to cover the hole area with bedliner but do...

What should be bolted to this threaded hole (red arrow)? Passenger side near starter.