Re: Fasteners (suspension)
and when you put the new ones in you can use some anti-seize on the threads to help prevent corrosion next time around
Note that if you use anything like that on a suspension bolt to be VERY CAREFUL with the tightening torque because the values given in the manual are for dry threads and lubed ones will slide far more easily. Since the amount of stretch of the bolt during tightening is the key thing, and torque is the typical way of measuring that, then the amount of friction when torquing is also key. Industry standards say that the friction in the threads account for ~40% of the torque, and the friction under the head as much as 50%, so what I do is reduce my torque specs by -40% and try to keep the anti-seize off of the head.
After assembly, drive for 100 miles and re-check (make a list of each torque so you don't get mixed up later), just to make sure nothing was missed and coming loose.
In general, an over-torqued fastener is more dangerous than an under-torqued one. An under-torqued one will come loose and can be re-tightened safely. An over-torqued one has been yielded and has lost strength from doing so.