Plastic Spacer for 555176

This plastic spacer is meant to add additional height to a Bottom Tapped Clamping Mount when necessary.  Bottom Tapped Clamping Mounts often times get used as motor mounts, and, when running gears it's important the spacing between the motor shaft and the base of the mount is 0.75".  Some motors, however, measure slightly under their listed diameter and so as the mount clamps down on the motor, it causes the shaft to be closer than 0.75" from the base.  The plastic spacer just slides under the mount, as a shim, and adds that little bit of height so your gears are able to mesh with one another.