I was swapping out the seatbelts in my 964 c4 Coupe and dropped the bolt that attaches the seatbelt retractor mechanism to the car. It fell behind the carpet, and I heard it clunk; I feel it is gone forever. Other side of the car is already partially reassembled and I'd rather not tear it apart to reference the bolt for replacement. I'd like to get bolt at hardware store if any of you could please tell me any characteristics of the bolt I length diameter, thread characteristics. I believe the part number is 91180315002 . Worst case scenario I order the replacement, any help would be appreciated.

 

NM I got it