Rear Derailleur Hanger Thread.

[Hugh Manatee]

A quick question. I have a vague memory of the thread on the hanger being M10 X 1.0

Is this right? I want to buy a tap and think I might have found the beast!

 

[Yellow Saddle]

Yes. Just buy a carbon steel one, you'll only use it once. HSS is too expensive for the job.