I thought it stopped at Grade 8 also.
But apparently there is a Grade 9. I found that out today at work. One of my mechanics ordered the wrong bolts from Mcmaster Carr. They would probably chew up extractors pretty good.
Hello Everyone!!!!
I'm a welder and a mechanic that has been working at a steel mill for the pass 13 years. Also do automotive work on the side.
Been lurking a lot here and decided to finally sign up.