Handy site for 748 owners / thread obsessed
 

This is part of a Dutch owners site, but it's in English :)

Useful when you want to replace a nut/bolt and need to know the thread size, before a trip to the engineering shop.

http://www.ducati.dk/teknik/moment748motor.htm

http://www.ducati.dk/teknik/moment748stel.htm

Found it whilst checking for the thread size for the clutch drum nut, after finding the only thing wrong in the kit to fit my Corse slipper was that dear little nut....

M20 with a 1mm pitch btw.