Proper lug nut??

I picked up some Cragar SS wheels but I’m confused as to which type of lug nut is best for the application. The hole in the wheel is countersunk with a 60 degree angle but it also has a recess for a mag washer. They are correct fit, not unilug, so it is a round hole.

Which type of lug nut is BEST for my application, 60 degree nut or shafted nut with washer?

Can you explain Why?

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