> 
> 2. Question. would the Helicoil be as effective as the Keenserts in this 
> application?  What thread size is the outside of the 3/16 insert and 
> would there be enough threads in the hole to hold? Can I drill the 
> threads out of present holes and have enough material to thread a 3/16" 
> Helicoil?  I can get Helicoil kit with 12 inserts, tool, and tap at the 
> local auto store.  Keenserts availability?  I'd like to get flying again 
> this weekend.
> 
> https://www.oreillyauto.com/detail/b/heli-coil-3878/tools---equipment-16488/hand-tools-16814/cutting---drilling-tools-16542/thread-repair-16906/heli-coil-inserts-19596/ecce6617012f/heli-coil-10-32-inch-sae-thread-repair-kit/55283/4368725
> 

The helicoil will be stronger than the original threads.  The question is 
whether you can break off the tang on a helicoil in such a shallow hole without 
damaging the helicoil itself.  Try it on a test piece first.  Is it strong 
enough?  I don't know.  But I do know it is significantly stronger than the 
original threads. The same is true for almost any kind of thread insert.

-Jeff



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