Grade 5 is fine, but I use grade 8 on everything, mainly because I like the pretty gold color.
Don
Grade 5 is just fine. But use grade 8 when doing anything suspesion and brake related.
There is a school of thought that says grade 8 are too brittle for suspension, as they have very little flex and will snap rather than give a little in a shock loading situation. I have no idea if that is factual. [S
I would say false. Did a bit of reading. This is directly from the K-T Bolt Mfg. Inc. website: "Grade 8 bolts have been hardened more than grade 5 bolts. Thus they are stronger and are used in demanding applications such as automotive suspensions. Grade 8 bolts have 6 evenly spaced radial lines on the head."
Another plus of grade 8's is your a little less likely to round off the head when you get lazy and reach for the handy visegrips instead of walking over and getting the proper wrench out of the drawer.
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