Who's got a chart that shows Suzuki bolt grades?...

[tkent02]

Been looking for a while, can't find it anywhere.

What grade do I need to replace a Suzuki bolt with a 4 or a 7 on the head?

[tbirdhd]

tom metric uses 8.8 ( grade 5) or 10.9 ( grade 8)

[tkent02]

I know, and Suzuki uses a 4 or a 7. What do those mean?

[Guest]

I know, and Suzuki uses a 4 or a 7. What do those mean?

Ya know, I've always wondered that myself. You'll find some bolts head stamped with a 4-7 etc.

[Gorminrider]

Interesting.
I find this...

Metric fasteners which are becoming the norm also use a grading system, but not the same numbers as the US. The cheapest fasteners have no marks, just as the US, and are very weak. We do not recommend use of a non-graded metric fastener for anything but decoration. The progression of numbers is roughly that of the US counterparts, but 2 numbers higher. For example a bolt with a 7 on its head is roughly equivalent to a grade 5. The 10.9 rating is about a grade 8 and the more recently introduced 8.8 is in between.

here

http://www.motorcycleperf.com/TechTips/IntrotoFabrication.html

edit I'm still looking! but think it might be found in "JIS standard" somewhere...?