Will 3/4-ton lower control arm shaft work for 1/2 ton?

[rubberbandit]

I have new lower control arm shafts that fit a 3/4-ton and am wondering if they would work with my 1/2-ton. They are the exact same length overall but there are more threads on each side (and thus less shaft in the middle). Is this okay or do I need a 1/2-ton shaft. My control arms are 1/2-ton as is the truck itself

Thanks guys