what year mirrors are these?

[riz]

I bought my 82 K5 Blazer with newer side mirrors and I have since given it a fresh paint job and now I'm going to start putting things back on it but I can't find two of the screws for the mirrors. Does anybody know where I can get these or more importantly, what year(s) the mirrors are originally from or if there are multiple years that the screws are the same. Here are a couple pics of my Blazer before I redid the paint.





Any help would be much appreciated.

RIZ