I recently had to take the front gear off of my bike and had some difficulty undoing the bolts. Because of their poor condition, I have decided to replace them. However, I have no idea what they are called. I've included a couple photos that show the bolts themselves and the holes they are meant to fill. I had to saw the end of one of them off to get it out, and the Allen key holes are circular, so really they do need replacing.
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2Yep, chainring bolts. Pretty standard item, though I suppose there may be 2-3 different sizes.– Daniel R HicksSep 13, 2015 at 18:16
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2"size" in this case means length, even the imperialists use 10mm threads. So you get single ring, double ring, even triple ring lengths.– MóżSep 13, 2015 at 22:34
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1 Answer
They're called simply chainring bolts. The tool to hold the other part while tightening is chainring bolt wrench.