How to attach hub to window motor

[TheHolyHades1]

Hello.

We currently have the black plastic hubs that fit onto the shaft of the denso window motors.To attach them, we have previously used holes drilled through the shaft with a pin of some sort to attach the two. However, I think that this isn't the best solution and I was curious what other ways (if any) you guys used to attach those black plastic hubs, apart from solely friction. It seems as though there are small holes drilled into the plastic star shape around the shaft on the window motor - should these be used for screws?
Thanks.