What screw material do I want and what brand?

I am using the standard screw-on faceplate that comes with the Delta 46-460.
I am ordering from McFeeley's, which I have done before, but just got lost in the infinite variety of choices.

I want the strongest self-tapping square drive screw, #8, 3/4".

(I just broke off a home-depot 1-1/4" spax screw inside the bowl I was turning)

I know, easy question, but I don't remember which material or brand is strongest.

Thanks.

Brian