What are the wheel bolt dimensions for a 380 SL (1983)

I am planning to purchase a set of wheel lock nuts for my 380 SL (1983). When searching the internet I am getting so many different thread lengths. At the moment I tried US UK and German sites. No leads. If anyone has good source in Europe that would be a bonus. Thank you!

I am planning to purchase a set of wheel lock nuts for my 380 SL (1983). When searching the internet I am getting so many different thread lengths. At the moment I tried US UK and German sites. No leads.

If anyone has good source in Europe that would be a bonus.

Thank you!

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