This is a remix of the other model, incorporating splined inserts and matching splined halves to allow for 45 degree incremental rotation.
No threads, assemble with #10-24x2.25" socket cap screw and nut.
Version 2: Has deeper socket cap and nut hole so a 2" socket cap screw will work. Also added a fastener location on the controller end that takes a #10-24x1" socket cap screw and nut.
The author remixed this model.