ttAmerica RoadsterAWD

Hey Guys, buttoning up the rear suspension but two bolts are stripped. Figure I can go to auto parts store and get replacements, but what grade bolts do I use? The bolts are the ones that bolt up the spring plate to the rear wheel hub. Thanks in advance!

spanky

Grade 8 at a min

V2Rocket

metric 8.8 is similar to SAE grade 5.

should be more than plenty (check your old hardware for a marking, 8.8, 10.9, 12.9, etc and match that).

not a highly-stressed bolt.

KevinGross

I think you are referring to the two M12 x 1.5 x 40 bolts, and my recollection is that they (and their lock nuts) are grade 10.9. Cheap enough from Porsche, and $2.90 a piece from Bel-metric.

divil

I was looking for replacements for these recently, and they were not available from the usual suppliers. They came up in the websites when I searched with the part numbers, but they all turned out to be NLA when I placed the order. I posted a thread about it and the advice I got was that it's risky to use chinese made bolts. In my case, they weren't stripped - it was just that some of the threads were damaged by the spring plate. I'm guessing that's a common thing - once you loosen the nuts, the weight of the trailing arm is hanging on the threads by the edge of the spring plate. But I just re-used mine since the threads at the end were fine. If you really do have to replace them, look for the hardness marking on the head as others have said - it'll be 8.8 or 10.9.