Hydros controller mounting screw size

[Tinklez]

Does anyone know what size screws to use to screw on a Hydro launch onto a controller mount? I can’t seem to find anything on their website to know a specific size screw

 

[Subsea]

I suggest you talk with customer service at Hydro.

 

[Connor At CoralVue]

The smaller controllers are ~M2, the Larger controllers can fit an M4. Shouldnt be much of an issue with any button head.