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Lug nut rule

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Old Aug 17, 2006 | 08:46 AM
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Default Lug nut rule

Does anyone know what kind of rules the NHRA has on lug nuts? I've only raced with stock wheels and no one has ever said anything about them, but now I'm going to be racing the pickup this weekend and don't want to get turned away because of them.

Right now the studs don't extend quite all the way through the nut. It seems (from memory) that there either has to be a min of 1 thread showing, or thread engagement equivalent to the size of the stud (1/2" in my case). But I can't remember.

Thanks
Derek
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Old Aug 17, 2006 | 09:04 AM
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The threaded portion of the stud MUST extend into the 'Hex' portion of the nut at least a distance equaling the width of the stud.

So a 7/16th stud must engage the threads IN the hex portion of the nut at least 7/16ths os an inch

I hope this helps
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Old Aug 17, 2006 | 09:34 AM
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Correct. This rule is only in place if you are running slicks. If you are on street tires, it does not apply.
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Old Aug 17, 2006 | 09:34 AM
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guess I'll have to do some measuring to make sure the ones I have are legal....got to get some open lug nuts for the front anyways.
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Old Aug 17, 2006 | 11:18 AM
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You running street tires?
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Old Aug 17, 2006 | 11:41 AM
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Street tire

so I'm good with my regular closed end lug nuts....correct?
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Old Aug 17, 2006 | 11:43 AM
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Correct
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Old Aug 17, 2006 | 01:15 PM
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Closed please, we dont need anymore nuts showing after that last photo
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