Replacement for carb drain screw?

[remn]

I stripped the head on my right carb drain screw on my 2008F, and I'm wondering if I need to buy a stock replacement, or whether it's in a standard size I could pick up at a hardware store for a few pennies. Has anyone had any luck using a non-stock screw as a drain screw?

[the mole]

You could just cut a slot in it with a dremel.