Slotted tool to undo derailleur hanger nut and bolt

General cycling advice ( NOT technical ! )
atlas_shrugged
Posts: 255
Joined: 8 Nov 2016, 7:50pm

Slotted tool to undo derailleur hanger nut and bolt

Postby atlas_shrugged » 28 Jul 2019, 6:02pm

I need to remove a derailleur hanger and there is a hex nut and bolt holding this in place like this:
https://www.ebay.co.uk/i/290977018290

The nut has a slot in it to prevent turning and the nearest slotted size is 10mm or possibly 11mm. Can anyone provide a link to the exact tool that is required to hold this in place and prevent turning?

I will use the usual penetrating oil tricks to get this undone. But if anyone knows any additional tricks to undo a seized hex nut and bolt then I would be grateful.

User avatar
foxyrider
Posts: 4518
Joined: 29 Aug 2011, 10:25am
Location: Sheffield, South Yorkshire

Re: Slotted tool to undo derailleur hanger nut and bolt

Postby foxyrider » 28 Jul 2019, 6:38pm

you want a chainring bolt tool
Convention? what's that then?
Airnimal Chameleon touring, Orbit Pro hack, Orbit Photon audax, Focus Mares AX tour, Peugeot Carbon sportive, Owen Blower vintage race - all running Tulio's finest!

atlas_shrugged
Posts: 255
Joined: 8 Nov 2016, 7:50pm

Re: Slotted tool to undo derailleur hanger nut and bolt

Postby atlas_shrugged » 28 Jul 2019, 7:08pm

Thanks to that tip it is off now - and was very badly rusted.

Cheers.