Since the super lock screws are resessed into the button it is actually best to follow the provided instructions and drill out the hole. As the screw isn't designed to drill and cut through wood. Use a 7/64's drill bit and drill 1 1/2 inches into the guitar/bass. Drew shows a great technique here using tape to mark the bit at 1 1/2 inches insuring a perfect fit.
Check out the video:
[ame="http://www.youtube.com/watch?v=otN75l3_O68&feature=PlayList&p=4F156DE5A29EECC7&index=11"]YouTube - Ernie Ball Super Locks Installation[/ame]