Well, problem solved for now. I was unsuccessful at getting a good hole through the center of the screw, as when it broke off, the remaining piece inside the fuel filter housing is thick and protrudes out towards me right in the middle of the screw. I had to drill out the entire screw and re-thread the opening. Seemed to work fine, though if I had one size larger tool I could have bored and re-threaded an even sturdier new threading. Its holding just fine though.

Anyone think in the long run I should pony up for a new fuel filter housing?