Engineer here.

This chart seems pretty stupid. I mean, why??? Also, what’s the use of the X-Y graph in inches and millimeters?

Also, 3/4" converts to 19.1mm, not 19.0mm (19.05 rounds up)

And anyone who has tried to use metric wrenches as a substitute for the proper size imperial one knows this is only going to work for a couple of sizes. The rest are going to be too tight or usually too loose.

Are there even any imperial fasteners at all on any new vehicles today???

This chart be dumb

If Ram owners could read, they might find this useful

It’s to help them calculate how close they should get to the ass of my Honda, while in a 30 MPH zone.