Hi Michael,
The screw is one of two set screws on the front of a Bauhaus clock that hold the faceplate. I thought its size might be contributing to the rough edges. That said, typically set screws are about this size.
If you have not looked, I included in the file the thread profile and helix used as well as the center core.
I can eliminate the threaded section and be careful with close ups in that area.
Thanks.
Leonard
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