Originally Posted by
danvuquoc
40Nm isn't actually all that much, you should be able to apply that with a standard wrench with very minimal effort -- its only ~30 lbs-ft. Yes you can overtighten it, and yes you can strip it. Depending on your hub material, you could damage that too.
Don't cross thread, use anti-seize, don't over-tighten, don't under-tighten.
Have you, or anyone else ever overtightened a locking?
I repeat don't cross thread it, grease it, and tighten it till it stutters and it works fine.
Conversely, many people have under tightened lock rings and had their cassette come loose.
BTW the torque spec for a cassette lock ring is a minimum spec, not a range or a maximum