Wheel Stud replacement

the ridges are just to help it bite a bit and keep it from turning. As long as it fits i really don't think you will have a big issue.
So the little ridge pattern doesn't matter? The ridge pattern on the old stud seemed to match the pattern on the wheel flange pretty well - kinda like it would 'lock' into place. The ridges on the new stud appear to be wider and don't seem like they would line up. I didn't try jamming them in there.

Just keep in mind your not supposed to tighten your lug nuts as much as your impact gun possibly can either. not saying your one of those guys but some people are.
Haha. Agreed. Mine got stripped without an impact gun. Was just getting them started with a wrench. 40+ yr old steel I guess.