Nope,

The screw in itself has a D shaped head.

You will need a special tool if you want to leave them in and adjust them accordingly.
http://www.fasteddysports.com/?page_id=3&product_id=697

Me, I used a piece of clear plsstic tubing that provides just enough friction to get them out, then replaced them with a thumbscrew... much easier!
http://www.fasteddysports.com/?page_id=3&product_id=682

My new venture: http://www.voglosounds.com