Spare Tire Stud Length

What is the correct length of the spare tire stud for a 1970 Challenger R/T w/ 15" rims (space saver spare).

The one from my R/T was missing when I got it.

Thanks!

I'd welcome information on any other E body spare tire stud lengths also. This is commonly missing and could help alot of people out.

Tav

Stud length post.

Wow Snoopy that an incredibly informative thread!
Thanks again!!

Tav

Sweet. Thanks!