I have a beater bike that has a striped thread. I want to install a helicoil and have a friend that has the tools but does not have any helicoils left. Is there a place I can get a pack of 5 or 6 or a single insert? Its on the chain ring side RHT if that helps.
Yes but the problem is the size. The bike pedals uses a 9/16-20 which seems to only be used on bikes. The best I've found is a pack of 50 thats costs about $65. I could get a cheap crank set for that price.
too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
The 9/16" x 20 thread is a common spark plug thread, so the right hand version should be available at any decent auto parts supply, probably in packs of 10. Many years ago, I contracted with an insert maker to wind the left hand version (which they were willing since they already made the RH version as a stock item) so I could sell crank repair coils for both sides. I sold many over the years, and you should be able to find a LH coil at the bike shop.
I thought all spark plugs these days are metric therads. I did a quick search of on-line auto parts and all the helicoils were meteric except a couple had 7/8-18. Do you know (or anyone for that matter) of a metric size that would be compatable to the 9/16-20? meteric seem to be easier to get.