Looking at AliExpress part
here (you may need to clear all aliexpress cookies if you looked at the Russian translation before).
4 x 40 sockets... how many would we need? 40x should do one camera, i.e. one pack should do 4 cameras (if we don't stack pins). Should I get one pack first? It is over a month for the delivery.
It does not specify if it is beryllium copper.