yeah standard bolts are the only ones that use grades
metric bolts uses classes
class 10.9 is roughly the same as a grade 8
http://www.boltdepot.com/fastener-information/Materials-and-Grades/Bolt-Grade-Chart.aspx
metric bolts uses classes
class 10.9 is roughly the same as a grade 8
http://www.boltdepot.com/fastener-information/Materials-and-Grades/Bolt-Grade-Chart.aspx