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USER GUIDE      TAPS

ISO Metric Fine Thread
Nominal Dimensions According to UNI 4535-64

Tap flank diameter production tolerances for ISO 6H Nut             Coarse Pitch Threads Dimensions in mm
threads limit dimensions - nut threads ISO 6H

                    Nut thread                           1/8·H      H = 0.86603P

   1/2·H                                                            H1    =  5   H  =  0.54127P
H                                                                            8
           H1                                                                17
    1/2·H    1/4·H r            60°                      h3         h3    =  24  H  =  0.61343P

                                              60°                   d2    =  D2  =  d-    3  H  =  d-0.64952P
                                Screw1/6·H                                                4

                                                                    d3 = d-2h3 = d-1.22687P

D D2 D1                           P d3 d2 d                         r  =  H  =   0.14434P
                                                                          6

Nominal               Flank Dia.  Minor Diameter             Thread Depth                     Flank Dia. Tap  Flank Dia. Tap
Dia. d=D                d2=D2                                                                Tolerance 6H d2  Tolerance 6H
           Pitch P                                                              Radius r
  M 40                            Screw                      Screw
  M 40                              d3   Nut D1                h3   Nut H1       0.289       Min. Max. Min. Max.
  M 42                                                                           0.433
  M 42     2 38.701 37.546 37.835 1.227 1.083                                    0.217    38.754    38.791 38.701     38.925
  M 42                                                                           0.289    38.115    38.157 38.051     38.316
  M 45     3 38.051 36.319 36.752 1.840 1.624                                    0.433    41.074    41.106 41.026     41.226
  M 45                                                                           0.217    40.754    40.791 40.701     40.925
  M 45     1.5 41.026 40.160 40.376 0.920 0.812                                  0.289    40.115    40.157 40.051     40.316
  M 48                                                                           0.433    44.074    44.106 44.026     44.226
  M 48     2 40.701 39.546 39.835 1.227 1.083                                    0.217    43.754    43.791 43.701     43.925
  M 48                                                                           0.289    43.115    43.157 43.051     43.316
  M 50     3 40.051 38.319 38.752 1.840 1.624                                    0.433    47.077    47.111 47.026     47.238
  M 50                                                                           0.217    46.758    46.796 46.701     46.937
  M 50     1.5 44.026 43.160 43.376 0.920 0.812                                  0.289    46.118    46.163 46.051     46.331
  M 52                                                                           0.433    49.077    49.111 49.026     49.238
  M 52     2 43.701 42.546 42.835 1.227 1.083                                    0.217    48.758    48.796 48.701     48.937
  M 52                                                                           0.289    48.118    48.163 48.051     48.331
  M 55     3 43.051 41.319 41.752 1.840 1.624                                    0.433    51.077    51.111 51.026     51.238
  M 55                                                                           0.217    50.758    50.796 50.701     50.937
  M 55     1.5 47.026 46.160 46.376 0.920 0.812                                  0.289    50.118    50.163 50.051     50.331
  M 56                                                                           0.433    54.077    54.111 54.026     54.238
  M 56     2 46.701 45.546 45.835 1.227 1.083                                    0.217    53.758    53.796 53.701     53.937
  M 56                                                                           0.289    53.118    53.163 53.051     53.331
  M 58     3 46.051 44.319 44.752 1.840 1.624                                    0.433    55.077    55.111 55.026     55.238
  M 58                                                                           0.217    54.758    54.796 54.701     54.937
  M 58     1.5 49.026 48.160 48.376 0.920 0.812                                  0.289    54.118    54.163 54.051     54.331
  M 60                                                                           0.433    57.077    57.111 57.026     57.238
  M 60     2 48.701 47.546 47.835 1.227 1.083                                    0.217    56.758    56.796 56.701     56.937
  M 60                                                                           0.289    56.118    56.163 56.051     56.331
           3 48.051 46.319 46.752 1.840 1.624                                    0.433    59.077    59.111 59.026     59.238
 M 2,3                                                                                    58.758    58.796 58.701     58.937
 M 2,6     1.5 51.026 50.160 50.376 0.920 0.812                                   0.03    58.118    58.163 58.051     58.331
                                                                                  0.04             Nut Tolerance SH8
           2 50.701 49.546 49.835 1.227 1.083                                             2.144      2.156 2.138      2.194
                                                                                          2.393      2.407 2.373      2.429
           3 50.051 48.319 48.752 1.840 1.624

           1.5 54.026 53.160 53.376 0.920 0.812

           2 53.701 52.546 52.835 1.227 1.083

           3 53.051 51.319 51.752 1.840 1.624

           1.5 55.026 54.160 54.376 0.920 0.812

           2 54.701 53.546 53.835 1.227 1.083

           3 54.051 52.319 52.752 1.840 1.624

           1.5 57.026 56.160 56.376 0.920 0.812

           2 56.701 55.546 55.835 1.227 1.083

           3 56.051 54.319 54.752 1.840 1.624

           1.5 59.026 58.160 58.376 0.920 0.812

           2 58.701 57.546 57.835 1.227 1.083

           3 58.051 56.319 56.752 1.840 1.624

                    Metric thread MA (old UNI 160 Profile)

           0.25       2.138       1.976 1.976 0.162 0.162

           0.35       2.373       2.146 2.146 0.227 0.227

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