2016 CX-5 Sport license plate screw size needed

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2016 Mazda CX-5 Sport
My '16 CX-5 Sport license plate screws are rusted badly. One of them I can't even insert a flat head screwdriver into the slot. What size do I replace them with? Are they available like at Advanced Auto or Autozone?
 
You can probably also find them at Home Depot or any other hardware store. Bring the original screws in and ask for assistance from an employee to help match the screw thread, pitch and length. You can also spend a bit more to get stainless steel screws if you want (those won't rust).
 
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