Cragar SS Lug Nut/Stud Engagement Question.

I have those wheels on one of my cars. I didn't feel safe with the thread engagement with stock length studs. I called Cragar and was told you need at least 10 turns of engagement on a 1/2-20. I ended up going with longer studs, but another option are these conical/shank nuts. This one is made by Cragar, but I believe other places sell similiar.

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