Rear Output Flange Advice

Some Help please,

Once I have put the new output flange in, I need to tighten it - Yes all the info I have looked at states 130Nm but this always shows a nut being tightened up. Mine is a bolt which has a smaller Ø than the nut so I assume should be a lesser torque? If so does anyone know what this would be?

Also how do I go about setting my 3Nm preload please?

Cheers

diff flange ?preload wont be effected unless youve removed or changed shims on the pinion ,75lbft but just very tight is ok

Thanks for the advice James

Cheers