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I'd change all the strut bolts (archive)

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Posted by craigwatanabe on August 03, 2001 at 21:35:38:

In Reply to: Over torqued one of the three strut bolts posted by Chris Rose on August 03, 2001 at 17:15:55:

Sounds like your strut bolts encountered a lot of stress. Check the grade of your bolts, and rely only on OEM or bolts purchased from a reputable supplier. I've seen Grade 8 bolts fail under moderate torque because they were improperly or illegally stamped (big underground market for bad bolts).

Otherwise your struts may have undergone severe stress enough to pass the maximum tensile strength of those bolts. I'm not sure what the grade is for strut bolts, but I do know that if you want strong bolts, use Grade 8 or better carbon steel. Don't use stainless steel as their tensile strength is less. And always when reassembling bolts, use a good bolt dressing like Anti-Seize so removal the next time is a painless event.

Anytime you have to re-bolt on high-stress application, you should always use new bolts as torqued bolts have reached their tensile point once and are considered stressed with a good possiblity of fracture under normal conditions.


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