Pololu Robotics & Electronics
My account Comments or questions? About Pololu Contact Ordering information Distributors

Screw for FS90R servo wheels


What size screw is it that goes in the center hole of the FS90R servo wheels?

Not the two 4-40 holes for the universal hubs, but the center hole that’s designed just for the FS90R.



There are two different types of screws included with the FEETECH FS90R. One is a self tapping M2 screw that is about 8mm in length, and the other is an M2 screw that is about 5mm in length. I measured their diameters to be about to be about 2.0mm for the long screw and 2.25mm for the shorter screw.