So how about that, front wheel flew off!

It seems to only catch by 3/4. So the wheel length is a close 1 1/8, the stud is about 1", the lug nut catches on 3/4.

So deduct 1/8 from the wheel because the wheel stud is only 1", the lug but catches on 3/4.

I'd say the lug nut catches about 65% of wheel stud.

About 5/8.