Door Handle Lock Cylinder Cap screw size?

[CodyTeamNC]

I am trying to replace the part

BA1Z-78218A14-A​

I lost the screw in the door taking the old one off. Wondering what screw or what the screw size is that holds this piece in so I can get a replacement. Anybody know?

 

[Steve8316]

Get a bit magnetizer, and go to the JY. Or just get a magnetic fish tool and find the one you dropped. Have you tried taking the door panel off & looking inside? It may be sitting in the bottom where you can grab it.