Yellow_Feva Posted August 13, 2014 Report Share Posted August 13, 2014 Ive been working on my 67 520 since I picked her up 1 week ago and I just found some wheels I want to put on her. I need to know what the thread pattern on this truck is cause 12x1.25 fits but its to loose. Thanks. Quote Link to comment
DanielC Posted August 13, 2014 Report Share Posted August 13, 2014 520 and 521 trucks are SAE for the body fasteners. Try a 7/16-20 lug nut. Quote Link to comment
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