License Plate Screws

[hellohithere]

I was tightening the screws for my rear license plate and the plastic washer bits were brittle and cracked. Any idea where I can order these online? The local Service Centers have been swamped and have over an hour wait every time I go there so I'd like to avoid that if possible.

 

[hellohithere]

I found a few on Amazon but not sure if they would rust like the previous ones I purchased from there. Can't find OEM ones anywhere.