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Is it really that bad? I've got a few alu stems with A2 and A4 stainless bolts, all installed with shit tons of grease. Not had a problem with corrosion... yet.
ectoplasmosis-
It's fine if you don't introduce an electrolyte. Add sweat or meltwater from salted roads though and it gets ugly fast.
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We have to use stainless coated fasteners at work into our aluminium castings because of this. Done a fair amount of work on it in the past . Have some great pics of aluminium being eaten away by it!
gbj_tester
eskay
Depends....!
Stainless into aluminium is bad (galvanic corrosion hell). Some zinc plated would be good in that situation, or coated stainless.