Grade 12.9 rear wheel hub bolt for Nissan CB31



                                         1.Specifications :
                                            
                                             bolt : M22*1.5*120
                                             nut1: M22*1.5*S32*H32
                                             nut 2: M22*1.5*S32*H21
                                          2.Material : 40Cr (ASTM5140)
                                     
                                          3.HRC : 39-42 o

                                           4.Surface :Zinc plated

                                           5. Color : Yellow .
                                           
                                         6 .Quality grade : 12.9
                                   
                                          7.ISO9001:2000 Certificate .