What size lug nuts?

[blownstang]

What size lug nuts do I need to run a 15x8 5.5 backspacing weld prostar on the rear? The guy I'm getting these from is including free lug nuts, I just have to tell him what kind. I have Moser 31 splines, these http://www.americanmuscle.com/moser-...axle-9904.html, and I'm currently using my stock close end lug nuts on the stock 99/01 cobra wheels.

This is what I found on Summit:
Lug Nut Seat Style: Shank
Lug Nut Shank Length (in): 1.300-1.380 in.
Lug Nut Shank Diameter (in): 0.679-0.687 in.
Washer Outside Diameter (in): 1.250 in.

I guess I'm asking about the thread size. Is it 1/2"? Is this what I want? http://store.summitracing.com/partde...5&autoview=sku
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[FirstWorldProblems]

McGard shank lugs. 1/2 -20

 

[ShelbyGuy]

you want a cone seat not a shank or bulge seat on the nut.

 

[blownstang]

you want a cone seat not a shank or bulge seat on the nut.

Can you explain why? Can you provide a picture or link? I've always heard of everyone running the shank lug nuts with a washer.

 

[ShelbyGuy]

Can you explain why? Can you provide a picture or link? I've always heard of everyone running the shank lug nuts with a washer.

My bad, I was thinking of a normal wheel rather than the universal-type Weld hole. The hole in the wheel decides what the lug nut seat should be. Contact Weld.