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Old 11-01-2012, 11:24 AM   #9
PratoN
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Join Date: Jul 2011
Fan#: 88058
Location: Milwaukee, WI
What I Drive: 2012 Kona Blue Ti Hatchback, DCT

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Quote:
Originally Posted by hand-filer View Post
The existing bolts are the equivalent to a grade 8 rating which is pretty strong in terms of tensile strength.
A 12.9 rated bolt would be better but at some point we need to consider the strength of the material you are installing the bolt into.
The engineering technologist in me is saying that we should not take this too lightly.
These 6, 8mm bolts are holding our front ends together.
Correction *barely holding

8mm!? Sweet Jesus. It looks like proof load is 22ft-lbs and maximum is 29ft-lbs - 1.25 coarse pitch (24/32 1.0 fine pitch) I use this site: http://www.futek.com/boltcalc.aspx?mode=metric

M8x0.5 bolt would bring us to 27ft-lbs recommended 36ft-lbs maximum. My head hurts.
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