Not Sagmill-but I've done a fair bit of digging for Torx (star) drive, button-head 10-32 x 5/16" screws...and so far such a critter does not exist.
That being said, you CAN buy a pack of screws that match the specs of the ALG screws from McMaster-Carr
http://www.mcmaster.com/#91255a262/=vriaz8
Now, I'm fairly certain you don't need to use thread-locker on these screws. However, if you're paranoid like me, and want to, I would advise using Vibratite VC3. It's similar in hold to Blue Loctite. However, it's reusable once applied, and it has been far more pleasant to work with than Loctite has ever been. A 30ml bottle will also last you approximately FOREVER.
http://amzn.to/1F66L6E
BTW-if you prefer blue Loctite, the new stick applicators are FAR more awesome than the liquid. SO much easier to use.
http://amzn.to/1DFGrzk