wheel hub thread pitch ?

[TreviDash]

Does anyone know, or able to measure the road wheel bolt thread pitch?

Thnaks.

[rachaeljf]

M12 x 1.25

Hey, my first proper post/answer!

Cheers R

[TreviDash]

Cheers, and Welcome!

So it's a 12mm diameter bolt with a 1.25mm thread pitch.

I've had a measure since (I don't have thread pitch measurer, and swore they were different to my Alfa 155 as they din't fit Beta hub...) so the rest of the detail is:

17mm hex head.
The longer 'alloy wheel' bolts are length 56mm, having a 35mm shank and a 22mm thread.

* goes for a lie down * 

[MattNoVAT]

Just to add a little more info to this thread, you do have to be a bit careful if you are using the Beta wheel spacers with original Cromadora wheels, I was not happy with how far the wheel bolts screwed into the hub if they were being fitted.  Bolt manufacturers stated at least 8 full rotations to be properly secure and I found that the bolts on my car with spacers they were doing four/five at best.  As they are quite an important part to keep on the car I opted for longer wheel bolts, but did have to turn them down 5mm because I could not buy the right length from the start and the next size up (45mm I think) went in too far and locked up the whole hub.

If you want spacers and need exact measurements just shout