Hello rotary enthousiasts, I have a problem with the nut locking the pitman arm in place.
I damaged it, it is not a standard thread, and Mazda France cannot help me (your car is too old... not in our system).

Would someone know what is the thread out of the steering box?
The nut I am looking for is 999212000 on the attached diagram.

 

I believe it is fine pitch metric, not sure of the size though

 

I have mine apart now, I'll measure it and post up the numbers either tonight or tomorrow

 

So I went ahead and ordered hex nuts from an online hardware store.
I can confirm now that the nut is a metric M20 with a fine pitch of 150.

 

I think you mean a 1.5mm pitch. (150mm would be huge! Almost 6 inches from one thread to the next)

 

Yes, 1.5mm (but for some reason in France it is also called 150, maybe 150µm).