Spanner size - Shimano Sora derailer

[rossoreed]

Does anyone know what size spanner is needed to tighten the rear derailer cable grip please.
I have gone through my toolbox, but can't get one to fit snugly and don't want to burr the nut edges.
Shimano Sora RD3300

 

[Cheradenine]

When stuck Shimano actually have all the technical docs on the webpage.

 

[rossoreed]

That's the first place I looked. It gives the torque settings, but not the nut/spanner size!

 

[PpPete]

I didnt think they'd used nutted ones for years. Most are 4 or 5 mm allen key these days.
First guess would be 8 or 9 mm.

 

[gbb]

I didnt think they'd used nutted ones for years. Most are 4 or 5 mm allen key these days.
First guess would be 8 or 9 mm.

Its a while since i did mine, (older sora 8 speed) but 9mm was the first size i thought of..

 

[rossoreed]

The front derailer is a 5mm allen key, but the rear is a nut and square retaining plate. It is 7 or 8 years old though.
A 3/8" socket is just a little too big, fits but slack.
3/8" = 9.52mm, so thanks, I'll go buy a 9mm.

 

[rusty bearing]

Yep, its a 9mm