Stuck Bolt...Help Required.

[haggis]

Helicoil

theres a bit of kit called a helicoil too.

drill a small hole in whats left of the bolt and then thread the helicoil in.
As the thread is backwards on the helicoil, it grips tight and turns out the other threaded part....if you get what i mean. :?

A helicoil acts as the threads should you have to drill out the bolt and totally ruin the original threads. The helicoil is then threaded in and grips whats left of the original threads and functions as the original threads would have done

 

[Will Palmer]

Re: Helicoil

A helicoil acts as the threads should you have to drill out the bolt and totally ruin the original threads. The helicoil is then threaded in and grips whats left of the original threads and functions as the original threads would have done

Helicoils are also often used to put 'harder' threads in 'softer' metals. I.e. you could fit a steel helicoil to an aluminium dropout to lessen the rist of a steel mech bolt stripping the thread.

 

[speedplay]

Well it looks like i stand corrected... ive looked at the link for screwfix above and the tooling there , I have personally known as a helicoil as thats what I was told before.

Everyday is a school day it seems

 

[Will Palmer]

Everyday is a school day it seems

I love that phrase - I use it so often! Bad days are days when you don't learn anything

 

[speedplay]

Everyday is a school day it seems

I love that phrase - I use it so often! Bad days are days when you don't learn anything

better than " lifes a b*tch and then you marry one"

 

[shovelon]

I take it that the bolt head is concealed in counterbore. Going back to the stud extractors may work the best.

Also if you drill off the head and can then remove the part, your local auto machine shop or commercial parts deburring house can burn out the remanders of the bolt with thier electrical discharge machine. Asuming your mount is conductive. Usually costs about $15 US. I have this technique done 3 to 4 times a year with various calamities.

Good Luck with that,
Terry

 

[haggis]

Re: Helicoil

A helicoil acts as the threads should you have to drill out the bolt and totally ruin the original threads. The helicoil is then threaded in and grips whats left of the original threads and functions as the original threads would have done

Helicoils are also often used to put 'harder' threads in 'softer' metals. I.e. you could fit a steel helicoil to an aluminium dropout to lessen the rist of a steel mech bolt stripping the thread.

Yeah knew that dude