Grade 12.9 front wheel hub bolt for Nissan CB31
 
                                  
                                       1.Specifications :

                                          bolt : M22*1.5*101
                                          nut 1: M22*1.5*S32*H32
                                          nut 2: M22*1.5* S32*H21
                                      2. Material : 40 Cr (ASTM5140)

                                      3.HRC : 39-42 ^o
                                   
                                       4.Surface : Zinc plated .
               
                                       5.Color : Yellow .
                                  
                                       6.Quality grade : 12.9
 
                                       7.ISO9001: 2000 Certificate .