The screw fits flush, but I still put a little adhesive felt on the bottom side. My playfield was dinged up from the wrong screw head. Screen Shot 2017-07-06 at 11.27.35 AM (resized).png
http://www.marcospecialties.com/pinball-parts/4008-01041-06
http://www.pinballlife.com/index.php?p=product&id=4038