From the TIS:
E90 - Driveshaft flange hub to output shaft:
For M27 Thread the torque is 420NM
For M24 Thread the torque is 259 NM
In each case the advice is to "replace collar nut, lightly oil contact surface"
F10 530d M Sport, September 2012 Individual Amazonite Silver, Oyster Dakota Leather, Auto, Nav Pro, Bluetooth + USB Devices, Expanded BMW Online, Comfort Seats, Sunroof, Sun Protection Glass Individual Satin Walnut Honey Brown Trim Interior Inside/Outside Mirror with folding and autodip, M Rear Spoiler