Cylinder Head Bolts Diameter

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between d1 and d2 exceeds the limit, replace the bolt with a new one.
Limit (d1 - d2): 0.23 mm (0.0091 in)

Fig 1: Identifying Cylinder Head Bolts Diameter
Courtesy of NISSAN NORTH AMERICA, INC.
If reduction of diameter appears in a position other than d2, use it as d2 point.