Ender 3 v3 direct filament drive screws.

Hey everyone, my friend recently gave me an Ender-3 v3 KE and I have been fixing it and putting it back together. I have had to buy a lot of replacement screws and I can’t seem to find the screws that go in to the front of the direct filament drive. I have seen in pictures that they are black Allen key screws and are probably M3, but I don’t know the length or type of machine screw I need to get. Does anyone know?