Quote:
Originally Posted by 71K5Randy
69-72 is a 7/16 fine thread carriage bolt that is over 6” long. Hard to find that as common hardware, if they exist at all. GM used a lug nut to fasten the wheel, hence the 7/16 fine thread bolt.
73+ changed to a 1/2 coarse thread and z-bar wing nut, so common carriage bolts are easy to come by in that thread.
The washers were identical across years.
Hope that helps.
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Thanks that helps some., but I need an example to measure.