I have an 04 titan with an awful lot of rust around the UCAs and LCAs. It is reasonable to suggest I will need all new hardware once these are to be replaced. No one other than dealer will sell grade 10 bolts apparently.
On the driver side, I have one UCA bolt and nut that are both rounded pretty bad. The other came out fine. Apparently this truck spent an unusual amount of time parked on grass, and the rust is evident underneath. From what I have read the year range for compatibility was 2004 to 2009. You said yours was 2013...are they still the same?
Nissan went to a non-camber bolt for the later models because they're not really needed for stock setup. If you're running anything aftermarket, you'd probably be best off grabbing a couple sets of SPC Camber bolts (they're the same as OEM for the most part). They'll cost you a good bit less and are available about everywhere online.