Don't bother trying to reuse the old corroded and damaged M5
Washer, just buy a new one!
It will look better and save you time messing around, when you could be doing something more worthwhile, like checking out the product gallery for your model.
You can see other items that you need to order but may have overlooked.
Another M5
Washer you may wish to consider:
9410105800
The more comprehensive your order, the better value for you in reduced shipping costs, when divided over the number and value of your order. Please make sure the parts you order are compatible with your model.