Use new bolt/nut. Did you?

[kin0kin]

Was going through service manual looking for torque figures and I realized this:

Did you really use new nuts and bolts every time you made adjustments / changed out parts?

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[MooMoo]

There are bolts that are technically single bolt use bolts, once you torque em to spec thats it, next time you need a new one. I don't think any of the suspension bolts are that way so you can re-use. I bet there are legal reasons why they recommend a new bolt or a just in case at least we know the bolt is not compromised, after all they are not that expensive. Personally i would use common sense, if the bolt looks to be in good shape, not old, not reused too many times I would probably just reuse, some areas I would probably just replace like a brake caliper bolt or something like that.

I wonder if even dealers are replacing bolts everytime they have to do suspension work, highly doubt it

 

[AZCWTypeR]

Unless the bolts are torque + angle of turn (i.e.: 60 ft-lb + 90 degrees), they should be fine for reuse. If mentioned for nuts, I normally use blue threadlocker instead of buying new.
Obviously my recommendations are for fasteners in good condition, not worn, bent, corroded, or subject to high heat.

 

[BigBird]

Most of those bolts go into aluminum parts

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