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THank you for your reply, I see the oroginal expert is offline and you are waiting,allow me to shed some light on this for you. Click the link I loaded below:
The torque spec. for the axle end nut is 159 ft-lbs however this was an oversight by toyota. The newer toyota's use a "staked" end nut that is not reusable once destaked. Look closely at your axle nut and you will see a small section is pinched/staked/bent inward to the recession in the axle, this is what replaced the cotter pins in older toyota's to retain the nut in place and to proper torque under load. The owners manual had an oversight regarding this, I have spoken to the engineers at the technical service department regarding this a couple years back and they told me to ignore this in the service schedule. If you axle nut was a problem you would hear a "click" noise from axle movement everytime you accelerated. It requires a special service tool and socke to remove/install these nuts.