The pinion side is Grade 8.
The T-case side is metric class 8.8, but they are larger than the pinion side bolts.
I agree some drive shaft studs would be better in there, but for now I am not too worried about breaking them, or people looking too closely at my shaft
Load psi Grade 8 vs Class 8.8 is 120,000 psi vs 85,000 psi.
http://www.tessco.com/yts/customerservice/techsupport/whitepapers/pdf/bolt_grade.pdf
The T-case side is metric class 8.8, but they are larger than the pinion side bolts.
I agree some drive shaft studs would be better in there, but for now I am not too worried about breaking them, or people looking too closely at my shaft
Load psi Grade 8 vs Class 8.8 is 120,000 psi vs 85,000 psi.
http://www.tessco.com/yts/customerservice/techsupport/whitepapers/pdf/bolt_grade.pdf