ONHU/ONMU-05 : Octagonal double-sided inserts with 16 cutting edges (HELIDO 845 line).
GICATGIREMgiicTough ‹————› Hard
Grade & Vc
  ONHU 050500-PL   4.5013.003.505.20-0.150.205606446 For stainless steel and high temperature alloys 2IC330 IC830 
  ONHU 050500-R-HP 4.5013.003.505.20-0.200.255607229 1IC830 
  ONHU 050505-TN   5.0013.003.505.200.50-0.150.305606503 For cast iron 4IC330 IC830 IC808 IC810 
  ONHU 050505-TN-MM   5.0013.003.505.200.50-0.200.305606289 For general applications 3IC330 IC830 IC808 
  ONMU 050505-TN   5.0013.003.505.200.50-0.200.305606053 For cast iron 3IC810 DT7150 IC5100 
  ONMU 050505-TN-MM   5.0013.003.505.200.50-0.200.305606674 For general applications 4IC330 IC830 IC5400 IC808 

ONHU - Precision ground
ONMU - Utility

For cutting speed recommendations, click on the required grade number related to specific item geometry