This bracket will let you mount your Thrustmaster Warthog stick to an upright 4040 extrusion piece. I have a simrig where I added some 4040 parts so that now I can easily install/uninstall the warthog stick so I can switch between racing and flying.

The diameter of the holes is 9 mm. I used 8x16 hex bolts with rings.

To mount the base of the stick to the mount you need longer screws (20mm or so) than those that are used to mount the original plate.