What is the type of screw Dark Magic II uses?

The title says it all, sorry if this is posted in the wrong forum.

It would go in Maintenance and Modifications.

You might try this link:

http://yoyoexpert.com/forums/index.php/topic,26913.0.html

and this one:

http://yoyoexpert.com/forums/index.php/topic,19914.0.html

That helped me a lot, thanks. ;D

Glad to have been able to help. Enjoy!