Summary

Simple wall or panel fixing, will fit any screw size under 5.5mm diameter.

Print without supports, both parts A and B are in the same STL but will separate after printing.

If you need a wall plug/dowel to affix this to a wall I have one of those too: https://www.thingiverse.com/thing:4721406

Autodesk inventor files are also in the folder.

UPDATE:
Added a smaller version called "Both parts MINI"

Print Settings

• Printer brand:

  Creality

• Printer:

  Ender 5

• Rafts:

  No

• Supports:

  No

• Resolution:

  0.2

• Infill:

  20%

• Filament brand:

  Prusament

• Filament color:

  Grey

• Filament material:

  PLA

• Notes:

  Any material does the trick.