Speed Changer Worm Gear Washer

[Gio800]

So I pulled out the speed changer just to make sure everything was right I then pulled the worm gear to see if the lock ring was seated in groove which is wasn't and of course the lock ring and washer went flying. I will never find in my garage. So the question is, what are the dimensions for the washer between the spring washer and the lock ring holding the worm gear in place? Most important is the thickness. I would like to find at a hardware store or have my machinist at work make me one. Thanks.

[DLB]

Mine measured:
ID 0.345"
OD 0.625"
Thickness 0.018"

- David

[Gio800]

Thank you very much