Ikea sidetable impossible to install
I recently purchased and assembled two of that exact same product (except mine are the dark brown color) and had no problem with the step 5.



If you look closely at the small IKEA tool it has more than 6 lobes in the tool opening so it can engage the hex nut in multiple positions. I also noticed that since the handle of the tool is offset to one side of the wrench end it is possible to remove and flip the tool over on each stroke of securing the legs onto the Listerby end table.

In the end I am very happy with the end tables. I also assembled the companion coffee table as well.