Knurled nut driver?

[Axtman]

Does anyone know where to buy a special nut driver for knurled nuts for switches like this:

https://www.amplifiedparts.com/products/nut-switchcraft-knurled-nut-switches

[BradC]

It had never occurred to me there might be a tool for those. I had a pair of small pliers with leather glued to the jaws for those.

[GLouie]

How is this? I don't have one, so can't speak of any details.
https://www.stewmac.com/luthier-tools-and-supplies/tools-by-job/tools-for-electronics/adjustable-toggle-switch-wrench?queryid=b1d959b8dd51f11866cbcc8a90327524

[coromonadalix]

ill be da.... never saw that tool,  man  in the past it would have been very useful      instead of using pliers    while protecting the instrument or equipment

[Doctorandus_P]

That's a nice tool.

I saved a picture of it for later reference.

For a DIY version, you could use a plastic tube, and then heat up a nut and press it into the end of the tube. A problem with this is that the tolerance would be very small, for example small differences in the (presumably random) knurling would prevent it from gripping.

With the picture search below, you will also find some other types.

https://duckduckgo.com/?q=Adjustable+Toggle+Switch+Wrench&iar=images&t=h_

[GLouie]

I don't know if the knurling/reeding and sizes are standard enough that the tool actually fits perfectly into the slots in all cases. Maybe not so good if it sometimes just clamps around the outer circumference, but probably OK for most people.

I don't do enough of these nuts and still just use a rag and small slip-joint pliers!