IR/L-60° : Internal 60° partial profile, laydown threading inserts. IR/L - Ground periphery and rake, IRB - with a chipformer and peripherally ground, IRM - With a chipformer. Application: general industry.
Internal left-hand shown
  DesignationdiPminPmaxTPI maxTPI minlRXYGICATGIREMgiicTough ‹————› Hard
Grade & Vc
  06IL A 60 3.970.501.2548206.000.050.60.65901349 1IC228 
  06IR A 60 3.970.501.2548206.000.050.60.65902553 2IC28 IC228 
  06IRM A 60   3.970.501.2548206.000.050.50.65920245 With a pressed chipformer 1IC228 
  08IL A 60 4.760.501.5048168.000.050.60.75901351 1IC228 
  08IR A 60 4.760.501.5048168.000.050.60.75901350 1IC228 
  08IRM A 60   4.760.501.5048168.000.050.60.75921209 With a pressed chipformer 4IC228 IC808 IC908 IC1007 
  08UIRL U 60 4.761.752.0014118.000.100.84.05901352 1IC228 
  11IL A 60 6.350.501.50481611.000.050.80.95998546 2IC250 IC908 
  11IR A 60 6.350.501.50481611.000.050.80.95901906 3IC228 IC250 IC908 
  11IRM A 60   6.350.501.50481611.000.050.70.95921250 With a pressed chipformer 4IC250 IC808 IC908 IC1007 
  16IL A 60 9.520.501.50481616.000.050.80.95995691 3IC250 IC508 IC908 
  16IR A 60 9.520.501.50481616.000.050.80.95992041 4IC228 IC250 IC508 IC908 
  16IRB A 60   9.520.501.50481616.000.050.80.95902781 With a pressed chipformer 1IC908 
  16IRM A 60   9.520.501.50481616.000.050.80.95920106 With a pressed chipformer 4IC250 IC808 IC908 IC1007 
  16IL AG 60 9.520.503.0048816.000.051.21.75994252 3IC250 IC508 IC908 
  16IR AG 60 9.520.503.0048816.000.051.21.75994795 5IC228 IC250 IC508 IC908 IC1007 
  16IRB AG 60   9.520.503.0048816.000.051.21.75902784 With a pressed chipformer 1IC908 
  16IRM AG 60   9.520.503.0048816.000.051.21.75921236 With a pressed chipformer 5IC250 IC508 IC808 IC908 IC1007 
  16IL G 60 9.521.753.0014816.000.121.21.75999156 2IC250 IC908 
  16IR G 60 9.521.753.0014816.000.121.21.75993188 4IC228 IC250 IC508 IC908 
  16IRB G 60   9.521.753.0014816.000.121.21.75902783 With a pressed chipformer 1IC908 
  16IRM G 60   9.521.753.0014816.000.101.21.75921245 With a pressed chipformer 4IC250 IC808 IC908 IC1007 
  22IL N 60 12.703.505.007522.000.221.72.55994900 2IC250 IC908 
  22IR N 60 12.703.505.007522.000.221.72.55991611 3IC228 IC250 IC908 
  22IRM N 60   12.703.505.007522.000.191.72.55921212 With a pressed chipformer 4IC250 IC808 IC908 IC1007 
  27IL Q 60 15.885.506.004.5427.000.312.13.15990414 0  
  27IR Q 60 15.885.506.004.5427.000.312.13.15992525 2IC250 IC908 

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