SCREW for slap stick “T” shifter

Hi guys, I run a '72 Challenger with a 408 stroker and 727 trans. I am running the factory slap stick shifter but I somehow lost the screw that holds the plastic shifter handle on.

I have never paid much attention to the specifics of the screw other than the fact that it's a countersink machine screw. Is it a typical hardware store screw or is there anything unique I must know about it? If it is a hardware store item, can someone let me know the thread size and approx length?

Thanks in...

SCREW for slap stick "T" shifter
Author: VAEeng