My god, how in the world did we ever work on bikes during all those years before Loctite and torque wrenches came into vogue?
It's not rocket science, it's a 5mm screw. I can't describe how tight over the internet, but if you've turned a few screws in your life without breaking them off you should have a sense of how tight is tight. Since you loosened the screws yourself maybe you can remember how tight they felt.
If you're nervous about breaking the screw, use a short wrench, maybe 4-5 inches or so, and tighten gently but firmly. You'll feel the screw bottom out, then can turn it about another 1/4 turn. There's a feeling of the torque ramping up as screws tighten comparable to how a faucet feels as you close it.
If you're not sure, ride the bike, and check it in an hour, then another 2 hours, then another day, then next week, then forget about it.
BTW- if you've installed a water bottle cage, and it hasn't fallen off, you already have a sense of how tight is tight.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
Last edited by FBinNY; 03-16-11 at 10:14 PM.