DESCRIPTION FRACTIONAL METRIC
CENTER CUTTING END MILLS    
     Straight Flutes    
          For Non-Ferrous & Cast Irons 314
          For Steels 312
     25° Right Spiral Flutes    
          For Non-Ferrous 318
COOLANT FED END MILLS    
     Center Fed - High Spiral    
          For Non-Ferrous & Cast Irons 378
          For Steels 356
     Flute Fed - High Spiral    
          For Non-Ferrous & Cast Irons 379
          For Steels 357
HIGH SPIRAL SHEAR CUTTING END MILLS    
     15° Right Spiral Flutes    
          For Non-Ferrous & Cast Irons 375
          For Cast Irons & High Temp Alloys 320
          For Steels 350
     25° Right Spiral Flutes    
          For Non-Ferrous (Sharp Edged) 327
          For Non-Ferrous 325
SLOW SPIRAL END MILLS    
     6° Right Spiral Flutes    
          For Non-Ferrous (Sharp Edged) 307
          For Non-Ferrous & Cast Irons 306
          For Steels 308
     6° Left Spiral Flutes for Steels 310
STRAIGHT FLUTES END MILLS    
     Sharp Edged    
          For Non-Ferrous (4 Flutes) 305
     Radial Edged    
          For Non-Ferrous & Cast Irons (2 Flutes) 302
          For Non-Ferrous & Cast Irons (4 or 6 Flutes) 304
          For Steels (2 Flutes) 300