I just run out and checked mine I have two pairs both from RD and they are all M12x1.25
It sounds really strange, where did you get them?
Then I should send you the nuts I was standing and looking at the spare balljoints and thinking that I maybe should send complete new pair but there was no way I could belive that it could be different threads.....
David 22kronor = Ģ2 so itīs not expensive
Janne