I think my wife, some relatives and most friends would probably agree . . .

Thanks for the leads . . . As you may know south Florida is a resort area with no industry so running to the local nut / bolt / fastener store just doesn't happen here.

I don't want those serrations on the bottom of the washer digging into my freshly painted parts . . .

I'll need to verify that they are M6-1.0 thread and can do that at my local NAPA store on Monday. If so, I did a little online searching and I think these seem to be the closest . . .

$12.31 - M6-1.0 (Thread Size) Metric Flange Lock Nuts Qty (50) [15316] : NutsandBolts.com

Hex Flange Nut M6-1.0 Black Phos Class 9

Can I live with the black phosphate coated ones? . . . I hope so . . . I'll just try to convince myself they are an improvement over the OEM silver ones and because the rescue roadster is black they'll kind of match better . . . LOL