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1/4" Dia, 2 Flute, Ball Nose End Mill - 31990

SERIES: E3B

General Application End Mill

1/4" Dia, 1-1/2" LOC, 1/4" Shank Dia, 2 Flute, 30 Degree Helix, Ti-NAMITE-A (AlTiN) Coated, Series E3B, Ball Nose End Mill - 31990


SKU / EDP31990
CategorySolid Round Tools > Milling > General Application End Mills
Min Order Qty1
SeriesE3B
Series DescriptionGeneral Application End Mill
High PerformanceNo
End ConfigurationBall Nose
Tool LengthExtra Long
Unit (inch/mm)inch
Number of Flutes2
Primary Workpiece Material(P) Steel|(M) Stainless Steel|(K) Cast Iron|(N) Non-Ferrous Materials|(S) High Temp Alloy
Secondary Workpiece Material(H) Hardened Materials
Cutting Diameter (DC) (Decimal Inch)0.2500
Cutting Diameter (DC) (Fractional Inch)1/4
Cutting Diameter (DC) (mm)6.35
Shank Diameter (DCON) (Decimal Inch)0.2500
Shank Diameter (DCON) (Fractional Inch)1/4
Shank Diameter (DCON) (mm)6.35
Length of Cut (APMX) (Decimal Inch)1.5000
Length of Cut (APMX) (Fractional Inch)1-1/2
Length of Cut (APMX) (mm)38.10
Overall Length (LF) (Decimal Inch)4.0000
Overall Length (LF) (Fractional Inch)4
Overall Length (LF) (mm)101.60
Shank Length (LS) (Decimal Inch)2.5000
Shank Length (LS) (Fractional Inch)2-1/2
Shank Length (LS) (mm)63.50
Cutting Diameter (DC) Tolerance (Decimal Inch)+0.0000/-0.0020
Cutting Diameter (DC) Tolerance (mm)+0.000/-0.050
Shank Diameter (DCON) Tolerance (ISO)h6
Corner Radius (RE) Tolerance (Decimal Inch)+0.0000/-0.0010
Corner Radius (RE) Tolerance (mm)+0.000/-0.025
Shank TypeStraight
Weldon FlatNo
Coolant OptionExternal Coolant
Coating DescriptionAlTiN (Ti-NAMITE-A)
Additional GeometryRight Hand Cut Direction (RHC)
Rake AnglePositive
Helix AngleRight Spiral
Helix Angle (Degree)30
Variable HelixNo
Center CuttingYes
Chip BreakerNo

Alternative Products SKU / EDP to 31990
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1/4" Dia, 2 Flute, Ball Nose End Mill - 31980

SGS 1/4" Dia, 1-1/2" LOC, 1/4" Shank Dia, 2 Flute, 30 Degree Helix, Ti-NAMITE-C (TiCN) Coated, Series E3B, Ball Nose End Mill - 31980

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1/4" Dia, 2 Flute, Ball Nose End Mill - 31970

SGS 1/4" Dia, 1-1/2" LOC, 1/4" Shank Dia, 2 Flute, 30 Degree Helix, Ti-NAMITE (TiN) Coated, Series E3B, Ball Nose End Mill - 31970

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1/4" Dia, 2 Flute, Ball Nose End Mill - 33324

SGS 1/4" Dia, 1-1/2" LOC, 1/4" Shank Dia, 2 Flute, 30 Degree Helix, Uncoated, Series E3B, Ball Nose End Mill - 33324

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