Size of CZ 527 scope rings screws?

[rcmark]

Anyone know the size of CZ 527 scope rings screws?

https://shop.cz-usa.com/ProductDetail/465700000495_Ring-Screw-Top-452527550

I put them on the calipers and got 3.38 X 11.79 mm.
So I am guessing 3.5 mm diameter.? (length really doesn't matter).