Stripped thread

[sdibbers]

Why not use a 90 degree adaptor on your drill?

I have one and it was still a bit too long.

 

[mikecoombs]

Heli coil make a cheaper version called re-coil if the thread is stripped all the way you can get away with tapping the hole with the helicoil tap, without drilling. The correct drill is effectively the same size as the stripped out thread. the drill just cleans up the hole,

 

[Objective]

Hi Mike,
"The correct drill is effectively the same size as the stripped out thread. the drill just cleans up the hole," - invaluable info, so no more material is taken from the head. Great.