Rear wheel hub bolt for Nissan Material: 40Cr Grade: 10.9 or 12. ... .9 3:Material:mild steel,45# steel,40Cr,42CrMohigh strength hub bolt, hub bolt and nut, high strenght bolts 10.91. Surface ... ;(2) Strict quality control;(3) very reasonable and competitive price. Rear wheel hub bolt for Nissan