Crankshaft pre alternator Dominator

I am looking for the exact diameter and length (up to the tapered part) of the threaded end of the primary shaft of the pre alternator crankshaft of a Dominator 500/600
Thanks in advance

How 'exact' do you need this ?
The thread is approx 11/16" long, and approx 13/16" diam.
Fitting a cycle thread nut of course, so there are specs for what that precisely should be.
Dommie 500 generator crank.
Hopethishelps.

Rohan, only just noticed your reply Your data sure helps, thanks a lot :!: