Looking for substitute options for the 3 studs that hold on the wheel cover of the N93 steel wheel options.

I've read a carriage bolt works if not looking for a 100 point correct numbers matching solution, Any advice or options? Are there modern day replacement bolts that will do the job? Elevator bolts? OEM replacements out there? ( I know that's like asking for Hen's teeth).
They simply hold on the cover, so I can't think that a solution cant be found.


Thanks i advance for any help/ideas.

 

No alternative ideas out there?

 

I was missing a few of the original ones and I fabricated my own just like originals. It was hard to find correct threaded lug nuts so I brazed up the holes and re tapped... This shouldnt be hard with someone with proper tools.