HELP! Looking for Fisher-Price Mounting Screws

Team 1676 needs some help. We have lost our Fisher Price mounting screws (I believe to attach to the gearboxes) and are looking to order more- the problem is, we don’t have any specs on the screws. Does anyone know specs for these screws (i.e. thread count, size, length- although that’s simpler to find)? Thanks for your help, everyone.

They are metric, 3mm or 4mm. Go to your local hardware store with a motor, and trial fit the screws. There won’t be any options on thread pitch, and length can be found by measuring the transmissions where they mount, and add about 1/8". Sorry I can’t be of more help, it’s been a while since we used them.