sunroof motor spindle nut
 

The hex jam nut that locks the gear cog wheel down is stripped out. I would imagine the nut itself might be available, then again you might have to buy the whole gear wheel assembly from the dealer which I don't need. I'm a long way away from the 1 pick'n'pull in a 100 mile radius from me so that's not the best option. I'm willing to cover costs and pay reasonably for anyone who has 1 of these. It's likely M10 x .75 thread and it would likely be the same for all model sunroof gears that have such an assembly.