I use a torque wrench on a lot of fasteners, axle bolts are not one of them. Its only critical if you dont get the F%#@ing thing tightened up

 

Torque 101. Over torque of hardware can damage parts and overstress the threads causing the bolt/nut to fail. I hope at least that you do a good pre-flight.

 

Axel nut is critical, use a torque wrench so you don't over tighten and harm the bearing.