[AT] Drill size for bolt tap question

[John Hall]

Al, look at these from Mcmaster. You would have to buy an installation 
tool, or make one.
https://www.mcmaster.com/#93302a170/=1779324

How about this for a cheap alternative. Tap the hole for a 1"-12 ( I 
think that is fine thread, double check please) buy a bolt, drill and 
tap it whatever 5/8 thread you need--plenty deep. Soak it in Loctite and 
screw it in the tractor. Next day cut off the unused portion of the 
bolt, grind smooth and you should be good to go. If you are really 
worried it would You could drill thru the intersection of the bolt OD 
and the tapped hole and drive in roll pins, basically doing what the key 
locking insert from Mcmaster would do. If this is more or less for looks 
on a show tractor, I'd just Loctite it. I bet you can do this for $5 if 
you can borrow the tap--I'd prefer to have the hole tapped in the bolt 
on a lathe.

John Hall

On 4/14/2017 3:05 PM, Al Jones wrote:
> I've been doing some more checking.  The helicoil kits I found online
> are insane expensive.
>
>
> Al
>
>