Joystick Base Screws (not mounting) - Where to buy?

Does anyone know where I can buy the 4 screws that hold the restrictor gate for a joystick? I’m looking specifically for the one in the Tekken6 Hori stick since I snapped the screws and need a replacement. Although it seems like it’s the same screw size that holds together the Seimitsu sticks and the JLF (unless I’m wrong, if so, please do tell me where I can buy the other ones, in case i ever need to replace them as well). Also, anyone know what the sizes of the screw are? I stopped by a local hardware store and they didn’t have anything that was of the same size… Thanks for the help!