Perhaps its possible to use a diamond file on the reverse end of the smallest allen key you have and reduce it till it fits - though you might need a good lens and steady hand to get a good hex profile. By creating a tapered end you'll have a one-size-fits-several small allen key for any other tiny grub-screws.
I confess to in the past using a jeweller's screwdriver set for such purposes - its not ideal by any means, but in a scrape improvisation can prove handy.
I confess to in the past using a jeweller's screwdriver set for such purposes - its not ideal by any means, but in a scrape improvisation can prove handy.
https://www.harborfreight.com/33-piece-precision-screwdriver-set-93916.html
I have a set of these and it comes in handy for stuff like that.
I have a set of these and it comes in handy for stuff like that.
Just buy a small metric Allen wrench set, one of them will fit. Only $4, and you don't want to strip it.
https://www.amazon.com/Wiha-35392-P...ocphy=9018914&hvtargid=pla-436999720777&psc=1
https://www.amazon.com/Wiha-35392-P...ocphy=9018914&hvtargid=pla-436999720777&psc=1
So how big is the connector? What kind is it?
Taking a wild guess, it's a "DIN", which has a 13.2mm shell. Simple scaling on the image says 0.947mm. Squinting error and likely standard wrench sizes suggest a 1mm.
HOWEVER-- a web search suggests small Allens go 0.7, 0.9, 1.3, 1.5, 2.0mm.
https://www.amazon.com/Wiha-35392-Piece-L-Key-Metric/dp/B001ATKWJY
https://www.digikey.com/en/products/detail/wiha/36992/511113
https://www.amazon.com/HORUSDY-Wrench-Metric-30-Piece-0-7mm-10mm/dp/B075BZGJJK
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Last time restoring a 3009, the parts required an imperial size instead. I'd suggest get both imperial and metric.
Full disclosure, this is actually a Graham arm & cable, but still very British so yeah it might work. Turns out Wiha has the tiny Imperial set to match
https://www.amazon.com/Wiha-35393-P...d=1650377125&sprefix=wiha+35393,aps,84&sr=8-1