Old 9th September 2019, 06:26 PM #1
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Weld a nut to a rounded stud?

Got three of four allen key studs out of a soon to be replaced rear brake disk. Fourth is fecked and I need a nut welded to it to remove it.

Any recommendations, starting from Dublin 14 or 16 please?
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Old 9th September 2019, 07:05 PM #2
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Re: Weld a nut to a rounded stud?

Tighten the other 3 down before you attempt anything...take the pressure off the remainder. If itís rounded out,heat the wheel around the stud,beat a good torx bit into it,better option would be a splined bit.
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Old 9th September 2019, 07:33 PM #3
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Re: Weld a nut to a rounded stud?

If your replacing the disc..grind the top off the bolt..remove the disc..chances it has a collar so no thread..grab it with a GOOD vice grip while its still hot from grinding.....you might get lucky....if not then get a nut welded on..
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Old 9th September 2019, 09:10 PM #4
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Re: Weld a nut to a rounded stud?

Thanks for the replys
It's been Murphy's law all the way with this! Hoped to get a welder and be done with it.
My vice grips are both 30+ years old and best heat will be a plumbers blowtorch. Grinding is unavailable for now.

It is a 6mm allen - should I step up to 7mm and will blowtorch provide enough heat? Chances of bit snapping and making it worse?

I'm getting too old for this stuff!
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Old 10th September 2019, 12:51 AM #5
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Re: Weld a nut to a rounded stud?

Your supposed to heat them to break the thread lock before trying to remove them
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Old 10th September 2019, 03:58 AM #6
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Re: Weld a nut to a rounded stud?

Looks like I'm fortunate to have damaged only one stud never mind the skinned knuckle then!
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Old 10th September 2019, 10:59 AM #7
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Re: Weld a nut to a rounded stud?

im thinking theres some drilling in your future . get good bits , increase in size slowly , when you have a good bit of the metal drilled out beat a torx head into it to get good grip, heat with heatgun and try remove it
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Old 10th September 2019, 12:21 PM #8
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Re: Weld a nut to a rounded stud?

Bate a tx40 bit into it with a ballpeen hammer and followed the marks with a tx45. Added an extended breaker bar, some heat and some gentle persuasion and it worked - stud unscrewed.

Thanks for the help lads..
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Old 10th September 2019, 05:19 PM #9
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Re: Weld a nut to a rounded stud?

Originally Posted by Pelagic
Bate a tx40 bit into it with a ballpeen hammer and followed the marks with a tx45. Added an extended breaker bar, some heat and some gentle persuasion and it worked - stud unscrewed.

Thanks for the help lads..
Fair fucks to ya! The aul hammer and extender bar is a great persuader.
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