Stop in for a cup of coffee

Rainy Day Auto said
Any idea where ma mopar used a 9/16 bolt and nut???

The only thing I can think is the 74+ rear bumper on a dart or duster.?????

I know it's mopar it came out of a mopar only bucket but that bucket has been there since around 2009 so I don't remember

View attachment 1715439436

Hmm….
The ones from the bumper to absorbers are a special oval/T head and are 1/2".

The toothy washer head looks right for the bolts that mount absorbers to frame, but they are 5/8" and would not have a nut. K frame bolts are even bigger - 3/4" I think.