I'm using stainless bicycle spokes to make something completely unrelated to wheel-building.

Let's just say it's a fastener, and it will live on a bicycle. I want to use stainless spokes because they are excellent, predictable material for strength and welding etc.

I would like to nut off the thread-end of the spokes with stainless steel nuts (for my application I cannot use chromed brass nipples or aluminum).

Therefore I need to know the exact thread of the standard issue bicycle spoke. (Spoke gauge doesn't matter -- 1.8mm and 2mm both work for me.)

I checked Sheldon's site but no answer. I don't have a thread-measuring tool, so a did my best with a ruler: there seem to be about 19 threads per 9mm of length. Which might indicate .5mm threads. However the diameter of the threads does not appear to fall on any standard metric increment. Diameter seems to fall pretty close to 1/16th" actually. Wondering if the thread is actually a tiny English/Whitworth spec that was set in motion 80+ years ago and the bike industry could never "jump tracks" onto metric.

Hopefully someone will jump in here with a 1 sentence, one spec, on spec answer.