this post was submitted on 29 Dec 2025
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Bike Repair Tips and Tricks

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The hex nuts on the wheel axles of my bicycle are too big for a 5mm Allen key and too small for a 6mm one. What’s the name/size/something of one that would fit? I’ve been googling but to no avail. I know it exists because the shop I got it from had one (but they didn’t know what it was called either or where to buy one from).

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[–] wiccan2@lemmy.world 6 points 1 week ago

The numbers are usually millimeters, try searching for a 5.5mm Allen key.

Lots of results when I search but no idea what country you're in so pointless me sending any links.