How do I

[indy4x]

Undo these little beggars



I've got loads of them to undo on a bunch of security fencing I've recently acquired

There is no electric where they are located but I do have a battery grinder.

My preference would be to use mechanical means and my original thought was to use either locking wheel nut remover or Irwin nut removers as I already have these. Tried them today and no joy, the Irwins came close but were either slightly too big or slightly too small to get any purchase

Had a look online and there doesn't appear to be a specific tool for the job

Will try a cold chisel and hammer tomorrow to see if I can loosen them enough to undo but failing that, does the collective here have any bright ideas before I burn through some cutting discs

 

[roofman]

look like posh rivnuts

 

[Seadog]

I think they're security shear nuts. Do them up to a certain torque and the hex shears from the nut. Voila! they can't be undone

 

[willie.macleod]

Irwin nut removers as I already have these. Tried them today and no joy, the Irwins came close but were either slightly too big or slightly too small to get any purchase

See your Irwin set, is it complete? They are normally sold with the most common sizes and you can buy an extension set for the inbetween sizes - https://www.toolstation.com/irwin-bolt-grip-nut-remover-set/p63045

 

[gordon stephenson]

Angle grinder and thin cutting disc,

 

[8ob]

There are quite a few shear collar removal tools on the market https://eumro.co.uk/hi-lokcollarremovaltools.aspx

Bob

 

[Fazerruss]

Hit them with the cold chisel first then the Irwins. The chisel will create something for the Irwin teeth to bite in to.

 

[Ashley Burton]

I would say cut them off will be quicker & easier

 

[daedalusminos]

Irwin's and an impact wrench.

 

[8ob]

There are a few different flavours/shapes of shear nut,if you can identify the make there will be a specific collar removal tool. The last one I bought was about £50, not cheap but if you value your time they are well worth it.

Bob.

 

[Ton-up]

Hire a 'paddy's motorbike' for a day...

 

[zzr1200]

Or borrow/hire a small generator for the day and use a 4 1/2" or 9" grinder.

 

[gordon stephenson]

Thin cutting disc, cut off excess thread then cut the nut through the centre until almost touching the body then split the nut off with a thin chisel. Quick job, and no heavy hammering against the bodywork,

 

[Agroshield]

What is on the other end? Any useful means of attack there?

Drill a 4mm hole in it and undo like a pin nut.

 

[The_Yellow_Ardvark]

Those security Shear nuts are a real pain.
Oddly they are designed that way. Makes breaking in difficult.

PM in bound.

 

[8ob]

If it’s being reused you dont really want to be hacking into the galv or plasticoat finish, the proper tool undoes the collars as if they were just a normal nut.


Bob

 

[Agroshield]

...the proper tool undoes the collars as if they were just a normal nut.

Out of interest, which one of those to which you linked would be good? Or were they more of a 'for example'? Most of them seem to be for use on aluminium.

 

[Ruffian]

Irwin reverse spiral sockets.

As you undo they grip tighter.

 

[The_Yellow_Ardvark]

Irwin reverse spiral sockets.

As you undo they grip tighter.

Do not work on them.

Those shear nuts are designed to withstand the average hand tool.

 

[indy4x]

Guys, thanks for all of your replies, much appreciated

Trying to avoid using a grinder as don't want to damage the galv if possible, not the end if the world if I have to, with 6 batteries I'd probably run out of patience before running out of battery oower

I looked at the expansion set for my Irwin nut removers and they would either be too small or too big

Anyways, popped round tonight with a hammer and cold chisel and I can loosen them enough to undo by hand which was a pleasant surprise

Will look online again and see if I can turn up the proper tool but looks like Mr Cold Chisel it is