square drive screws.

[Jon Page]

I use these to secure bass bridge aprons and sound boards in verticals
http://www.mcfeelys.com/product/0610-PTF/100-6-x-1-Fine-Thread-Pocket-Hole-Dry-Lube-Screws
Many times there is no need to drill a pilot hole.

With the ball tip driver, I can guide them right through the strings.
http://www.mcfeelys.com/product/HB-0274/2-Ball-Tip-Screw-Driver


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Regards,

Jon Page