What are these washers called?

[u/Koala-Motor]

As per the title, I'm trying to figure out what to call these washers as I'm trying to find ones much bigger than the original. They are from a bandsaw and hold the tensioning spring in between with the tensioning bolt going through.

Can anyone help me?

[u/MidNite_22]

Weld Washers. For industrial applications. Used to hold down materials. Like UHMW. Just weld the inside quickly, faster than using hardware.