Hi Sanne, I’d probably start with a Plane and make some edge loops and shift a few, something like this:

Move the selected edge loops along the X-axis:

and extrude the treads:

You’ have to make a few of those edge a bit longer in the first screenshot, but that doesn’t change the principle.
And they are guaranteed to have equal thickness along the X- and Z-axes this way!
If you want equal thickness in the ‘normal direction’, we would need a different strategy…