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Thread: Removing a rounded torx bolt

  1. #16
    At Work formula400's Avatar
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    Default Re: Removing a rounded torx bolt


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    I've no idea, as soon as i went to undo it the trox key spun, i tried to cut a notch with my hacksaw then gave up and come here

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    Default Re: Removing a rounded torx bolt

    Quote Originally Posted by sadlonelygit View Post
    can i ask the question

    how the hell do you fubar a torx bolt, unless using the wrong sized bit. i've spiralled a torx allen key trying to undo an egr on a transit, but the bolt was fine.....stuck fast but fine.
    Some are made of poor metal.

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    Should Get Out More Julian_Boolean's Avatar
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    Default Re: Removing a rounded torx bolt

    Use a bit that doesn't quite fit in the hole in an impact driver and smack 7 kinds of shit out of it

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    Should Get Out More RiceBurner's Avatar
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    Default Re: Removing a rounded torx bolt

    Quote Originally Posted by sadlonelygit View Post
    can i ask the question

    how the hell do you fubar a torx bolt, unless using the wrong sized bit. i've spiralled a torx allen key trying to undo an egr on a transit, but the bolt was fine.....stuck fast but fine.
    not all torx bolts are made of the same materials.....

    Same with Torx tools tbh, I've broken/worn more torx tools than allen keys.

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    Should Get Out More Kneerly Down's Avatar
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    Default Re: Removing a rounded torx bolt

    I find triple square bits easier to drive in than the next size torx.
    I've broken 4 torx bits on (car) disc retaining screws.* Difficult to get a Dremel in the right place to cut a decent slot so used to use a cold chisel but now just go straight for the drill, preferably my left-handed/reverse drill bits as they'll sometimes undo it in the process, but I've mislaid them.
    I assume the monkeys that car repair shops seem to get doing brake work think that the screws are the only thing holding the disc on, rather than the wheels.

    * having used heat and penetrating oil if it looks like they'll be a problem.

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    Should Get Out More Screwdriver's Avatar
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    Default Re: Removing a rounded torx bolt

    It goes without saying that these footrest fitting will have a thread lock on them of some sort. Even a small amount of heat will release most of them, so a hairdryer would heat it up enough (eventually). You don't need to use a blowtorch but a decent heatgun is right up there in the top ten "tools to have" for a bike workshop.

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    Should Get Out More Julian_Boolean's Avatar
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    Default Re: Removing a rounded torx bolt

    Quote Originally Posted by Screwdriver View Post
    It goes without saying that these footrest fitting will have a thread lock on them of some sort. Even a small amount of heat will release most of them, so a hairdryer would heat it up enough (eventually). You don't need to use a blowtorch but a decent heatgun is right up there in the top ten "tools to have" for a bike workshop.
    Further to this, pouring a kettle full of boiling water over it will be enough to weaken most thread lock compounds.

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    Should Get Out More a_morti's Avatar
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    Default Re: Removing a rounded torx bolt

    Quote Originally Posted by Screwdriver View Post
    If one of the screws is out, surely you can knock the heel plate around to loosen the stuck one.
    I assume he missed this post as it seems like a goer to me.

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    Should Get Out More Yorick's Avatar
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    Default Re: Removing a rounded torx bolt

    Quote Originally Posted by Julian_Boolean View Post
    Further to this, pouring a kettle full of boiling water over it will be enough to weaken most thread lock compounds.
    How does that work ? I imagine some engine parts get hotter than 100c.

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    Should Get Out More Screwdriver's Avatar
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    Default Re: Removing a rounded torx bolt

    Quote Originally Posted by Yorick View Post
    How does that work ? I imagine some engine parts get hotter than 100c.
    Different grades of loctite for different applications. Jap bikes generally have white heat releasing compound on brake parts and footrests etc.

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    Should Get Out More 1888's Avatar
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    Default Re: Removing a rounded torx bolt

    This was in Aldi last week. Only a 12v one but may be powerful enough to cut your slots.

    https://www.aldi.co.uk/rotary-tool-w...10302272570100

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    At Work formula400's Avatar
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    Default Re: Removing a rounded torx bolt

    Quote Originally Posted by a_morti View Post
    I assume he missed this post as it seems like a goer to me.
    Going to try this today as I am off from work, bloody hope it works!!!



    Sent from my iPhone using Tapatalk

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    Default Re: Removing a rounded torx bolt

    If you access to a grinder and have a spare larger torx bit try grinding the bit to a taper that just fits but will grip when hammered in. That combined with rotating the fitting at the same time might undo it.

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    Default Re: Removing a rounded torx bolt

    These are one of best ever purchases. Tap them on with a hammer than turn and the harder you turn, the deeper they cut into the bolt and will move it. Seriously good bit of kit and everyone should have set.


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    Default Re: Removing a rounded torx bolt

    Remove the footrest hanger ( 2 bolts to left ) complete with heel then get someone to weld a nut onto the end of the bolt
    the heat will almost certainly free the stuck torx screw and you can get a spanner on the nut to turn it before it goes completely cold

    if that fails drill it out and helicoil while you have it off the bike

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