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Cleaning up the threads in the F/R 12/4 hubs AM221/AO61.

Posted: Sat May 04, 2019 12:53 pm
by austinbrit
Is there any easy way to clean up the very fine threads that the hub caps(AM25/AO62) screw into.
Have tried using a scriber, unsuccessfully.
I am not sure what the size/thread is and would there be a tap to fit it?
Cheers
Paul

Re: Cleaning up the threads in the F/R 12/4 hubs AM221/AO61.

Posted: Sun May 05, 2019 9:12 am
by SimonB
If no one has the actual answer to this I suggest you buy some thread gauges, find out the tpi and profile and then get the appropriate thread file.
Regards
Simon

Re: Cleaning up the threads in the F/R 12/4 hubs AM221/AO61.

Posted: Tue May 07, 2019 11:12 pm
by austinbrit
Another suggestion was to use a Dremel and using the very thin grinding discs and the job is now done. You just need a steady hand.