Spare screws for b&l 5022

Hi everyone, Thanks for having me! In my free time I am trying to repair a pair of b&l 5022 wayfarers who belonged to my mother. I have to replace screws as they were repaired with incorrect ones and the temples open too much and asymmetrically. Do you know if I can find spare screws for that model, or even screw measurements somewhere?

Thanks in advance for your help! 😎