not that fine Scott, its a 1.5 mm thread pitch. Maybe you were
expecting 1.75 mm thread pitch on a bolt that size?

I believe the lug bolts/nuts are same 1.5 mm pitch, but a 14 mm
diameter. MB uses 12 X 1.5 mm thread pitch on some model's wheels.

alistair

On 8-Mar-11, at 11:13 AM, Scott Daniel - Turbovans wrote:

> so much discussion over one simple bolt !
>
> it is a 12mm thread diameter bolt.
>
> a 19mm hex head is a very normal size bolt head for a 12mm thread
> bolt.
>
> It's a rather fine thread and is about the only spot in a waterboxer
> vanagon
> where you will find this fine  12mm thread.