looking for this special tool

[andre tchmil]

I don't know if it is that special but I'm looking for a tool to unscrew these nuts. they are M3 or M4, round and have 2 slits .
No, a flat screwdriver won't do because the screw thread sticks out 10 to 15 mm.

 

[mjrippe]

Pic won't open.  Are you talking about collet knob tools perhaps?

 

[andre tchmil]

Pic won't open.  Are you talking about collet knob tools perhaps?

aha , yes could be but the thread stick out exactly 25 mm.
won't be easy to find. It's M3
picture opens perfectly here

 

[Khron]

What was the photo taken with?

 

[andre tchmil]

try this one

 

[hodad]

Look at Insert Bits.  They come in different sizes, so you might be able to find something that will work for you.

 

[andre tchmil]

Look at Insert Bits.  They come in different sizes, so you might be able to find something that will work for you.

I checked , but most of them can't hold a 25 mm long  screw thread and the outside diameter of the tool should be less than 5 mm.

 

[Michael Tibes]

Didn't they have something like that for the nuts on the knobs of a 4k/6k, probably also 9k? I have no Idea how it might be called, but maybe it rings a bell?

Michael

 

[andre tchmil]

Didn't they have something like that for the nuts on the knobs of a 4k/6k, probably also 9k? I have no Idea how it might be called, but maybe it rings a bell?

Michael

Again, the lenght of the thread screw is unusal. It's for opening VU meters.

 

[nashkato]

unfortunately none of the attachments can be opened

 

[Ricardus]

Picture isn't opening for me either. If you were uploading a properly formatted JPG the forum software would recognize it and display it. It's not. Something is wrong with your files.

 

[Khron]

*ahem...*

What was the photo taken with?

 

[andre tchmil]

iphone as HEIC , converted to jpeg.

 

[Khron]

I had a hunch that might be the case. Just the other week, someone else tried to post some iPhone photos here, and despite the ".jpeg" extension, neither the forum or desktop computers could open / "see" those.

... because Apple 

https://groupdiy.com/index.php?topic=75305.msg955060#msg955060

 

[andre tchmil]

Honestly , the latest OS  (catalina ) sucks big time.

 

[Gold]

I can’t see the photos but from the description perhaps
https://www.pbswisstools.com/en/tools/quality-hand-tools/screwdrivers/product/pb-1961-50

 

[rackmonkey]

beat me to it, Paul. That's it. Look for a slotted spanner nut driver. They are specific to the nut size, unfortunately.

 

[nashkato]

...and then there‘s a flat screwdriver and a dremel tool

 

[andre tchmil]

I can’t see the photos but from the description perhaps
https://www.pbswisstools.com/en/tools/quality-hand-tools/screwdrivers/product/pb-1961-50

Perfect , that should do . Thanks

 

[andre tchmil]

...and then there‘s a flat screwdriver and a dremel tool

No won’t do. There’s a 25 mm  rod sticking out.