Quote Originally Posted by ad4mg View Post
Best bet is an auto parts store. They refer to them as "set screws". NAPA probably has a tray of set screws in various sizes. You can order them on McMaster-Carr if you know what the size and length is:

https://www.mcmaster.com/allen-head-set-screws
Thanks for the tip, I will bring the antenna in so they can see what I need.