This bracket will allow you to hang an Ikea Hektar Lamp on a headboard approx. 35mm thick (that is the width of the opening).
Requires 2 M4x10 socket head screws
The tolerances are very tight on the screw holes, so I slid the bracket over a piece of 2x lumber to use a screw as a tap on the threads before assembly (see picture). It takes some force to get started.
The author marked this model as their own original creation.