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Old 08-13-2017, 08:00 AM   #7
Roger V
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Join Date: May 2010
Location: Michigan
Posts: 1,593
Default Re: Is this Wheel/Lug Nut Safe to use?

The relief is for the shoulder on the lug bolt as its threads don't go all the way to the hub. Therefore, the lug nut on the right hand side stops before it can get to the hub or tighten against the wheel's lug hole. Worn or "wallered-out" (not a word) lug holes in a wheel are another issue and why the lug washers were invented.
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