> Bob Lang chiming in here... nuts most certainly come in different grades.
> What you just bought were either grade two or grade five. They probably
> are silvery in color. Grade 8 look more goldish, I think they have some
> kind of cadmium plating... AN364 and AN365 look more like grade 8, I'm
> sure these are cadmium plated. They don't seem to rust.
> Call Pegasus or a local aircraft supply place for high grade/high quality
> bolts and nuts.
It depends on the manufacturer... Grade 8 can come zinc or cadmium
plated or otherwise. You generally won't find a grade 2 or 5 looking
"goldish", but you can find a grade 8 looking zinc'ish... if that's the
finish they chose. Also keep in mind that fancy stainless steel ones...
(like the two that I provide with my valve cover gaskets) are low grade,
great for a valve cover, bad for critical suspension part, etc.
As Bob suggests... go to Pegasus or other specialists.