Dejourknee

Yeah if I think of it or cross one in the wild outside of the hardware store, I will probably ask the guy if I can look at it. I've done weirder things in life, so hey. haha
I just went ahead and ordered one. I am still curious though since I not only bought a few screws, I also tried every single one I had in the garage + the 7 that came with it.
 
You know, I can tell the difference between a few 60's 70's era cars on a year by year basis. I have friend who can not only tell you the difference on all 60-70's Mopars but he can also tell you all the details of small things like door knobs, where the factory markings were etc... but also tell the difference by VIN's. It might not be a big deal now, but back in the day you could give him a VIN and he would tell you which car it belonged to, which engine it should have, and which options were on it.

Thank folks, and especially Neto ... That was totally 100% cool of you!  
I am the type, I would have done the same thing. I go the extra mile for people day in and day out, without expecting a thing.
It's good to know other's are out there, and also to get some karma back.
I will definitely pay it forward and just know it was much appreciated!
 
As to why I never just went to the dealer, at first it was because I wanted to use the antenna I had, then it became one of those things where I just wanted to know the size. You know us guys get head strong, and the more I searched and didn't find, the more I just wanted to know because the mystery was getting to me after I had lots of time in to it.  C'mon, we are all guilty of that right?, and this was my thing.
 
My plan is to head to Lowes/Home Depot around the corner and buy an M5 x.8 and if that doesn't work, then I am going to just head to the dealer.