End Mill Previous designation New designation
(ISO 13399)
(Square &
corner radius)
Parameter Definition Parameter Definition
D1 Diameter DC Cutting diameter
D2 Shank diameter DCONMS Connection diameter machine side
D3 Neck diameter DN Neck diameter
L1 Overall length OAL Overall length
L2 Flute length APMX Depth of cut maximum
L3 Neck length LU Usable length
R Corner radius RE Corner radius
  No. of Flutes NOF Flute count
 
(Ball nose)
Parameter Definition Parameter Definition
D1 Diameter DC Cutting diameter
D2 Shank diameter DCONMS Connection diameter machine side
D3 Neck diameter DN Neck diameter
L1 Overall length OAL Overall length
L2 Flute length APMX Depth of cut maximum
L3 Neck length LU Usable length
R Ball radius RE Ball radius
  No. of Flutes NOF Flute count
         
(Oval form)
Parameter Definition Parameter Definition
D1 Diameter DC Cutting diameter
D2 Shank diameter DCONMS Connection diameter machine side
L1 Overall length OAL Overall length
L2 Flute length APMX Depth of cut maximum
R1 Nose radius RE Corner radius
R2 Major radius PRFRAD Profile radius
  No. of Flutes NOF Flute count
         
(High-feed)
Parameter Definition Parameter Definition
D1 Diameter DC Cutting diameter
D2 Shank diameter DCONMS Connection diameter machine side
D3 Neck diameter DN Neck diameter
L1 Overall length OAL Overall length
L2 Flute length LH Head length
    APMX Depth of cut maximum
L3 Neck length LU Usable length
CAM-R CAM radius CAM-RE CAM radius
  No. of Flutes NOF Flute count
         
(Chamfer mill)
Parameter Definition Parameter Definition
D3 Tip diameter DC Cutting diameter
D2 Shank diameter DCONMS Connection diameter machine side
L1 Overall length OAL Overall length
L2 Flute length APMX Depth of cut maximum
L3 Theoretical tip length LTHEO Theoretical length
A Included angle SIG Point angle
  No. of Flutes NOF Flute count
         
Hole making Previous designation New designation
(ISO 13399)
(Drill)
Parameter Definition Parameter Definition
D1 Diameter DC Cutting diameter
D2 Shank diameter DCONMS Connection diameter machine side
L1 Overall length OAL Overall length
L2 Flute length LCF Length chip flute
  L3 Drill length LU Usable length
         
(Reamer)
Parameter Definition Parameter Definition
D1 Diameter DC Cutting diameter
D2 Shank diameter DCONMS Connection diameter machine side
L1 Overall length OAL Overall length
L2 Flute length L Cutting edge length
         
(Countersink)
Parameter Definition Parameter Definition
D1 Diameter DCX Maximum cutting diameter
D2 Shank diameter DCONMS Connection diameter machine side
D3 Non-cutting tip dia Max. Non-DC (Max) Non-cutting diameter (maximum)
L1 Overall length OAL Overall length
A Included anlge SIG Point angle