[Alpha 904]

since this is about the headphone port on my amp, I guess it belongs here. I've been having problems with my headphone port getting loose due to plugging and unplugging. I also noticed that my amp's headphone port has screw threading which I assume is for those headphone port screws that you see on some amps. I was wondering where I can get those screws

 

[Dreamslacker]

If it's a tabless Neutrik Combo-jack, get a pair of M3 screws. If it's the tabbed version, get a matching pair of nuts as well.
Some of the combo-jacks that are tabbed do not need the nuts. They have a metal plate surrounding the jack which are already tapped for M3 screws.