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914World.com _ 914World Garage _ Brake Bolt Hardness Question

Posted by: gcrotvik Mar 31 2014, 02:32 PM

I am collecting the parts to go to the plater for my 74 restoration. I noticed that my M12 x 30MM brake caliper bolts are a combination 10.9 and 8.8 harnesses. The Porsche PET and the OE Manuals do not state the hardness standard/requirement for calipers bolts. Are 8.8 hardness correct/ok to use for Brembo AM front calipers and 914/6 rear calipers?

Thanks,

Greg

Posted by: Eric_Shea Apr 2 2014, 03:46 PM

We have a mixture of Kamax 10.9 and Kamax and Lobo 8.8 in our extras bins.

I don't think it matters.