Auto locker hub removal?

[GeoCacher90]

So, I finally got it... The reason it was so hard is that there is a rang on the apeing loaded mwtal washer on the freewheel hub. This tang apparently broke off long ago, and the remaining part of it cut a groove into the end of the spindle as the washer was then allowed to spin. The stump of the tang was caught in that groove.

That begs the question, what would be the chance of finding a new washer for sale? If someone has one I would be interested. I have attached a picture.

Thanks!