NIAGARA N89103 1-1/4" Size, 2-1/2" LOC, 6 Flute, Cobalt Roughing End Mill
COB 1-1/4X1-1/4X2-1/2X8-1/2 6FL END MILL-NIAGARA

NIAGARA N89103 1-1/4" Size, 2-1/2" LOC, 6 Flute, Cobalt Roughing End Mill

Item #: 08-089-103
Size Type: Fractional
Size: 1-1/4"
Length of Cut: 2-1/2"

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  • Roughing end mills allow for heavier cuts and remove more material.
  • Ideal cutters for today's more rigid poweful CNC machinery.
  • Work piece materials identified at the sku level of each end mill.


  • Right hand cut and helix.
  • Select from the drop down box range of helix and coatings to improve performance & productivity and tool life.
Product Specifications
Size Type Fractional
Size 1-1/4"
Length of Cut 2-1/2"
Shank Diameter 1-1/4"
Tool Material Cobalt
Finish Coating TiCN
No. of Flutes 6
Overall Length 8-1/2"
Helix Angle 30°
Application Rough milling
Center Cutting No
Chamfer Dimensions 0.04"
Cutting Direction Right Hand
Diameter 1-1/4"
Cutting End Shape Square
End Type Square
Flute Length 2-1/2"
Helix Direction Right Hand
General Application Milling
Length 8-1/2"
Model # N89103
Neck Diameter 1.05
Neck Length 6
Nose Type Square
Reach_Inch 6"
Prop. 65 Yes
Reach 6"
Series RXC753
Shank Style Straight Shank
Type Roughing End Mill
UNSPSC 27112803
Weight 2.5 lbs.
Workpiece Material Steel, Die Mold Steels, Cast Iron
Prop 65 Warning Many metalworking products do contain metals that are included in the latest Prop 65 warning. Exposure to the elements can be harmful. May cause cancer and reproductive harm.

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