308 headlight motor arm hardware?

Hi all - having some difficulty with my left headlight. The nut or bolt or whatever type of thing that is at the end of the lifter arm that attaches to the motor has broken off or come loose allowing the arm to come off the motor attachment.

Could someone please tell me what nuts/connectors/washings/bushings I need to source to put it back together? Not too handy and not familiar with this type of end cap connector. Hardware store or Ferrari supply place?

Thank you!