This is according to Bobby's axle breaking machine.
All breaking measurements are in Ft Lbs.

12000 - Yukon Dana 60 35 Spline 4340 Chromoly Stub
8900 - Longfield 30 Spline Birfield
8300 - Stock Dana 60 35 Spline Stub
7000 - Longfield 27 Spline 4340 Chromoly Birfield
7000 - Newfield 27 Spline 4340 Chromoly Birfield
6800 - Treated Toyota Hub
6500 - Longfield 27 Spline 4340 Inner
6000 - Marlin Drive Flange
5800 - Stock Toyota Hub
5800 - Yukon Dana 44 30 Spline 4340 Inner
5500 - Pig 27 Spline 4340 Inner
5200 - Stock Dana 44 30 Spline Inner
5100 - Treated Toyota Birfield
5000 - Warn Hub
5000 - Randy's Birfield Eliminator Kit
4000 - Stock Toyota 27 Spline Inner Axle
3700 - Stock Toyota Birfield

Found here
http://board.marlincrawler.com/index.php?topic=11245.0