Hello italianonc,
Thanks for reaching out here in the Google Nest Community!
It's great that you're looking to replace the screws for your Nest Learning Thermostat. The Nest Learning Thermostat typically uses standard Phillips-head screws for mounting. You can find suitable replacements at most hardware stores or online retailers.
You can try using standard screws with a length appropriate for the mounting holes. Usually, 1 to 1.5-inch screws should work well for most installations. Flat-Head Wall Screws (Two) Stainless Steel 3.85 x 30mm Compatible with Nest Thermostat Wall Screw (Long Wall Screws). Just ensure they are compatible with the mounting surface and provide a secure fit for your Nest Thermostat.
Let us know if you need more help with your installation.
Regards,
Mark
