Metric Bolt Grades

[Henry W]

I am trying to get info on metric bolt grades 4T, 7T and 9T.

I cannot find a chart to find an equivalent bolt for 4T, 7T and 9T metric grade bolts from the metric grades 8.8, 9.8, 10.9 and 12.9.

Does anyone have anything about this.

Henry

[Cornelius]

I've no real knowledge of this, but maybe these pages can help you?

One for metric: http://en.wikipedia.org/wiki/Screw#Mechanical_classifications

And one for the 'T' standard: http://myweb.dal.ca/is353832/93fsm/introduction/8standard.pdf

Maybe the last table here would help?: http://www.sizes.com/tools/bolts_metric_standards.htm

[Henry W]

Thanks for the info Cornelius.

Does anyone know what T graded metric bolts are specificly used for. And what is the differance of them compaired to 8.8, 9.8, 10.9 and 12.9 metric bolts

Henry