A-GJV Taps

CGI / ADI Material Taps

For cast iron with vermicular graphite - CGI /ADI materials
Newly developed cast materials for the automotive industry often show very special grain structures that impart high strength with reduced weight. With this high strength to weight ratio comes a trade off in tool life. CGI (compacted graphite iron) and ADI (austempered ductile iron) materials are also very challenging to machine and tool life is an issue. Emuge A-GJV taps employ a combination of an increased number of flutes with a specially adjusted geometry. These powdered metal HSSE-PM tools permit longer tool life even in these highly abrasive materials as well as in normal cast iron.


  • Rigid straight flute design
  • Form C chamfer (2-3 threads)
  • Form E chamfer (1.5-2 threads)
  • Solid and coolant fed design options
  • TICN multi-layer PVD coating for additional wear resistance
  • For blind hole and through hole threads

A-GJV Taps Products