I put it in between the screw and the wire yes so the wire connector is connecting directly with the the connection block. I'll look into a replacement part but it's working right now and I can at least cook!

Thanks all! After also consulting with my father in law I tried a single washer to see if I could get it tight that way and it’s worked! Any electricians feel free to let me know if that was a bad idea but oven is functional and seems to be operating fine. I didn’t want to mess with the hole if I could try a simpler way first.

Yes they are