69 Dart taillight bezel screws????!!!!!????

No, those won't work. The screws are a machine thread, and only about 3/8" long. They just barely thread through the housing, and if they are too long they run into the sheet metal that makes the edge of the hole for the light bucket. Note to the OP, don't overtighten the screws, or you will strip out the threads. Don't ask me how I know this please.

This and its cast aluminum. Screws are black too and a flat head countersink not a oval head. I had a few. I don't know where they went. Its been several years since I dealt with this.