Servo nut plate

thingiverse

This is a nutplate for mounting servos with 3mm machine screws and hex nuts. It is sized for standard servos with 0.400" spacing between the mounting holes. For me, this avoids trying to hold the hex nut with pliers in one hand while trying to start the screw from the other side with the other hand.. You should be able to press the nut into the hexagon hole with pliers. If your printer is making it too tight, I've included the openscad file and you can adjust the nut_size parameter to your liking.