How To Determine the Correct Size Lug Nuts For a Trailer ...
The three most common lug stud sizes for a trailer are 1/2'-20, 9/16'-18, and 5/8'-18. In order to make sure you get the correct lug nuts you need to measure the lug studs on the trailer now as we have no way to look this up for individual trailers. I have attached a few options based on the lug stud size below.
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