This is a simple hook to use with Skådis pegboards and M3 T-nuts (please see).

Designed for M3 ISO 14583 screws. Needs to print with support under the stabilizers. (At least on my printer, there is no need for support in the hole.)

In the FreeCAD file, the radius, length of the tip and angle of the hook can be easily modified. You can change the values (within reasonable range) either in directly in the Sketch SKMainBody

or in the property list.