WARNING: This page is about a different car, the 2006 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Compressor And Replacement Components With Torque Specifications (QG18DE)
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Compressor And Replacement Components With Torque Specifications (QR25DE)