This is a simple cable clamp for mounting cables to surfaces. The screw hole has a diameter of 5mm, and the cable hole has a diameter of 10mm. This design is resizable, so only one file has been supplied (Though, I can create more sizes if requested).

I added a Chamfer to the inner and outer edges to make for a clean design, and possibly help with keeping the clamp straight during installation. I avoided a chamfer in the screw hole, as this might be used as leverage by the screw to split the layers.

Print sideways for best results, supports should not be required.