180pcs M3 x 6mm Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Black Oxide Finish, Allen Socket Drive, Full Threads,with Hex Spanner

All good suggestions for getting the screw out. Once you're past the crisis and looking for alternatives: I've had bad luck with the stock screws that come with the modules (the gold ones from Instruo were the worst). If you don't go with knurlies, I'd recommend some M3 screws from Sweetwater or PC. You can get like 60 for $6. Other alternative is something like this, though they are hex head - https://a.co/d/00r0Z5OA These are what I'm currently using. I find it safer to drop an allen wrench onto my other gear than a screwdriver.