Shackle bolts? As in the ones that hold your spring to the shackle etc?
Grade 8 would be overkill unless you've drilled and tapped them for a grease nipple.
You guys telling him to use Grade 8 bolts have obviously never looked at an aftermarket shackle. They all use Grade 5. Has anyone actually broken a Grade 5 shackle bolt?
Nothing wrong with overkill but I don't loose any sleep 'cause I've used Grade 5 bolts for my shackles. They've held up fine to 36's, lockers, a few 4+/5 rated trails and a couple of roll overs.
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Jon B.
'82 CJ7 Some mods (Hers)
'82 CJ7 More mods (His)
'02 Chev 3500 LT D/A