I am using this gimbal motor.
I need to know what size screws do I need to use. I am developing egg and a frame that has 5 mm thick walls, and based on the chart I know I need to use 4m screws. I want to know how much longer do I need to make the screws to perfectly fit this motor. I need help with this because I do not want to buy the wrong size screws and then have to buy more because I don't want them to be so short with a camera or far off mid-flight or I don't want them too long to short them.
Here's a picture of the chart I'm referencing to may provide some further help.