Does anyone know the thread pitch on bolt # 15 in the pic below? I know it's an M12 bolt, but I don't know the pitch. Thanks in advance ofr any help.

 

It is called Damper Mounting Bolt (Self Locking Bolt). I have 5th gen, but I don't have the Helm manual with me now. I 'm looking at 4th gen Helm manual now, it is 12 X 1.25mm. I think it is the same with 5th gen. Anybody confirm this?

 

yup, it's 12x1.25. I skipped over the page with the bolt/nut specs, but I found it in the end. Thanks.