Internal Threads
                                              H/8
                        P/8
                                       3H/8
                         60°
                                              5H/8
         H1
                                                      h3
                                                                                   GENERAL NOTES: H = Ö 3/2 x P = 0,866025 P
                                                             H
                               30°
                        P/2                                                            H/4 = 0,250H = 0,216506 P
                                              H/4
                                                                               d
D
                                                                                        H/8 = 0,125H = 0,108253 P
                                                                          d2
    D2                               P/4                             d1                5/8H = 0,625H = 0,541266 P
         D1                                           d3
                90°
                                                                                       3/8H = 0,375H = 0,324760 P
         External Threads                     Axis of screw thread
     P=Pas                                           D1=d1=d - 1,0825 P
     H=0,866 P                                          d3=d - 1,2268 P
     D=Diametru nominal                                 H1=0,5412 P
     D2=d2=d-3/4H=d-0,6495 P                            h3=0,6134 P