'17 3500 4x4 differential cover bolt torque

[Cummins12V98]

When I owned my 2013 and 2014 3500’s.....a 1/4” ratchet held between the first and second fingers worked great.

You will "FEEL" when the bolt stops turning. It's simply time earned feel to torque method.

 

[crazy jerry]

front cover bolt heads are 10mm 10.9 grade, rear bolt heads are 13mm 10.9 grade.
this is why I'm asking. I would think the 30ft-lb might be ok for the rear, but seems too high for the front. I looked at some charts and values were not all the same. I'm kinda confused...

the front and rear bolts are the same. m8x1.25. even same length. difference is fronts have 10mm head. rear 13mm head. book says 29ftlb if i recall but 25ftlb is plenty. they have factory loctite. your call whether you reapply it