FANAR - Полный каталог инструмента для резьбы - 2012

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                                                TECHNICAL INFORMATION

3. TAPS
3.1. Tap co n stru ctio n elem ents (on example of DIN-371)

PP0

     L1 - total length               S1 - relief of chamfer
     L2 - thread length              P - pitch of thread
     L3 - useful length              a - angle of thread
     L4 - length of driving square
     L5 - chamfer length                   - rake angle
     a - size of square
     0d1 - thread diameter           Yyi - spiral point angle
     0d2 - shank diameter
     0d3 - neck diameter             72 - angle of spiral flutes
     0d4 - (chamfer) point diameter  к - chamfer angle
     0d5 - web (core) diameter       r - straight flute
     m - width of land               X - spiral flute

                                     t - spiral point
                                     z - number of lands

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