WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Front Wheel Sensor Replacement Components With Torque Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.
NOTE:
The above figure shows left side. Right side is the mirror image.