Need Lock Washer for Sunroof

[blueeclipse]

The right track on my sunroof stopped working a while back and the day it stopped i had opened it and it opened but on the side where the pulley stopped working it dragged the bar that pulls the track and popped off the lock washer that holds the bar on.

I was able to fix the track finally the other day but I need a replacement lock washer tohold the bar in place. I've looked all over and connot find one that will work.

Any suggestions? Does anyone have a few of these washer?