u/hydra2466

As the title states I'm attempting to find some screws. I reached out to teradek and all I got back was a manual that didn't have the information. I'm looking to find screws to mount the npf battery plate to a teradek bolt pro 2000rx or to the bolt sidekick gen one. And I know I could use the 1/4"-20 but I'm mounting to a stand or clamp and don't want to have to remember every time to hold it when it pops off as I remove the stand. My best judgement has been either an M2 or m2.5 bolt at about 15mm length but I have no idea about if the pitch (I think it's called) would affect it much. Does anyone have the details?