Can anyone confirm that 8.8 bolts are OK for double shear lower mounting brackets on the rear shocks please?
Need to source some longer ones (AHC Camberley?) as the originals were "temporary" during build.
Any difference between bolts, set screws and/or socket v hex heads.
Thanks, Pewe

8.8 bolts are what most use I reckon.
Steve.

8.8 grade is fine for double shear mounts, assuming a reasonable diameter (often 12 mm?). Ideally you should get a bolt with sufficient shank to pass through both mounting points and space out any additional shank to the threaded portion. You can always remove any surplus thread. In practice this can prove difficult - it took me a loooong time to find suitable bolts to use on my suspension, not helped as most of them are 7/16"!

Dom.

[Edited on 4/10/07 by another_dom]

Should have added that socket heads will be higher grade (usually 12.9) than hex (8.8 or 10.9).

Thanks guys - now I've a better idea of what I'm after. Cheers, Pewe

Set screws are threaded all the way with no shank.

They'll work fine as long as they aren't rediculously long, a few inches is okay. And yes, no threads allowed through the shock eye nor either side of the bracket. It'll slowly saw through the softer metal so choose carefully.

quote:

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Originally posted by kb58
They'll work fine as long as they aren't rediculously long, a few inches is okay. And yes, no threads allowed through the shock eye nor either side of the bracket. It'll slowly saw through the softer metal so choose carefully.

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Section B-B is correct, though you don't have to have the collar if you pick just the right length bolt.

Also needed are spacers on each side of the shock bushing so that when the bolt is tightened, the bracket isn't drawn inwards. In other words, there needs to be spacers from one end of the bolt to the other, so when it's tightened down, nothing is bent.