Which replacement bolt for front flat mount adapter on Canyon Ultimate?

Hi! Can anyone help me identify the correct replacement front flat mount bolt for a 2024 Canyon Ultimate / Shimano 105 setup?

I’m looking for the single bolt that mounts the front brake adapter to the fork.

Front rotor is 160 mm, so there is an adapter installed.

I do not want the full adapter kit, only the replacement bolt.

I’m attaching a photo of the adapter.

Thanks!