Anyone definitively know the thread pitch for crankshaft pulley end nut?

[Agnelli]

The goal is to securely affix an 11" Moroso degree wheel to the end of the crankshaft, outboard of the crank pulley. I think our vehicles' axle hub nut is the same thread pitch as the M20 crankshaft end threads / end nut. I can use the deeper axle hub to thread on to the crank end, then use it to secure the degree wheel. All I need is to know whether these are:

1) coarse 2.5mm
2) fine 2mm
or
3) extra fine 1.5mm

then I will be able to order the correct bolt with matching thread pitch.

 

[Brad Garska]

The Crankshaft has a 1.5 pitch.

 

[JimD]

Added to the BOX under engine info. Cool thread gauge. Thanks Brad!

 

[Agnelli]

Thanks Gents!