Specs on Rearview mirror screw
 

Hoping someone can help me with locating a new screw for my homelink mirror. I had the mirror off to have a new windshield installed, and the screw was lost. There is nothing on nissan parts sites for it, and the dealer says they can't order it. What is the size of the screw? all I know is that it is a torx, fairly small.

If anyone can give me the specs so I can grab a replacement from somewhere that would be great!