Heli Coil bit size

[outlawbusa]

I am installing a M10 x 1.25 heli coil. The only one I could find locally came with the coils but not a kit and does not have instructions for the drill bit size.

After hitting google, it looks like it may take a 13/32 bit.

Anyone able to tell me differently

 

[TWT racer]

This is what I found, you may wanna double check

M10 - 1.5 _______Z drill ___________7/16 drill

 

[BusaBret]

10.5 mm drill is recommended for aluminum. .4134 diameter. A letter Z drill is also .413

13/32 is .406 and may be a bit tight. It will Prolly work if that is all you got.

Posted at 150 mph via Tapatalk

 

[outlawbusa]

Thank you for the info