What torque should the 4 axle retaining bolts be tightened up to?

[firstgear]

I am at the point of putting the axles in the differential. This is where I learned some interesting words last time I mocked this up. I found out that my finers are 5 times as big as they should be in order to fit everything in behind the axle. But assuming I get past that and get everything in place, there are 4 nuts that attach to the 4 bolts that retain the axle in place.

What torque should those 4 nuts be tightened up to?

This is a Ford 9" rear end with Dutchman axles and a disc brake kit from Ford (Explorer brakes, I know, go figure but hey it works!).