Plenty of aftermarket replacements - heck, on one of my HEQ5's, I replaced them with allen head bolts (rounded the tip). Not really rocket science, and you sure do not need those poorly made ratchet versions (that come from China anyway).
This guy seems to have not been able to multi-task
We know it was Mario....just why has he been so silent lately eh?
Last time I owned an SW mount (an AZ-EQ6), I spent a considerable amount of time (and patience) replacing every single M3 screw with a stainless one. Each and every original had rusted. Even the chrome plated stuff had started corroding and needed polishing and at least lacquer protection (I did not go to the effort of re-chroming them - I sold the mount instead)