I installed a set of test pipes this weekend. They didn't come with any nuts/bolts hardware. The holes on each end of the test pipes were not threaded like the stock cats, and the bolts on the rear of the cats do not come off the mounts.

Soo... I went to my local hardware store and picked up a set of nuts and bolts that fit.

My question is, are the nuts/bolts for exhaust special high-temp or anything? Should I be worried about them getting too hot and snapping?

 

I wouldn't be tooooo worried. Unless you got really bad hardware.

 

I got the nuts/bolts from Value Home Centers. They bolted up well, and no exhaust leaks.. so far..

 

you will be fine.