Originally Posted by
HillRider
Longer than that. I had a 1978 Pontiac Grand Am that had a mix of metric and SAE fasteners. Apparenly the more recently redesigned components were metric and the older ones SAE. The general rule was if the bolt had a blue painted head, it was metric.
Interesting. I assumed the difference between metric and SAE parts was where they had been sourced. I guess the lesson here is that auto parts stores have always been a good place to find metric fasteners.