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51/64" Dia, 180 Degree Point, Solid Carbide Drill - 58930

SERIES: 146U

Hi-PerCarb 146U Flat Bottom

51/64" Dia, 180 Degree Point, 0.8661" Shank Dia, 8.6614" OAL, 2 Flute, 5xD, Coolant-Through, Ti-NAMITE-X (TX) Coated, Series 146U, Hi-PerCarb 146U Flat Bottom, Solid Carbide Drill - 58930

Feature & Benefits

  • 4-margin design improves accuracy and surface finish along with increased strength for aggressive drilling
  • Specialized self-centering notched point eliminates the need for spot drilling decreasing thrust and deflection
  • Engineered edge protection improves edge strength and reduces edge fatigue allowing for increased feed rates
  • Recommended for materials ≤ 56 HRc (≤ 577 Bhn)

SKU / EDP58930
CategorySolid Round Tools > Holemaking > High Performance Drills
Min Order Qty1
Series146U
Series DescriptionHi-PerCarb 146U Flat Bottom
High PerformanceYes
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|(H) Hardened Materials
Secondary Workpiece Material(N) Non-Ferrous Materials|Plastics & Composites
Reach (xD)5xD
Size51/64"
Cutting Diameter (DC) (Decimal Inch)0.7969
Cutting Diameter (DC) (Fractional Inch)51/64
Cutting Diameter (DC) (mm)20.24
Shank Diameter (DCON) (Decimal Inch)0.8661
Shank Diameter (DCON) (mm)22.00
Usable Length (LU) (Decimal Inch)4.0239
Usable Length (LU) (mm)102.21
Flute Length (LCF) (Decimal Inch)5.1968
Flute Length (LCF) (mm)132.00
Overall Length (OAL) (Decimal Inch)8.6614
Overall Length (OAL) (mm)220.00
Shank Length (LS) (Decimal Inch)3.1890
Shank Length (LS) (mm)81.00
Point Angle (Degree)180
Cutting Diameter (DC) Tolerance (Decimal Inch)+.00031 / +.00114
Cutting Diameter (DC) Tolerance (mm)+.0080 / +.0290
Shank Diameter (DCON) Tolerance (ISO)h6
Shank TypeStraight
Weldon FlatNo
Coolant OptionInternal Coolant
Coating DescriptionTX (Ti-NAMITE-X)
Additional GeometryRight Hand Cut Direction (RHC)
Helix AngleRight Spiral
Helix Angle (Degree)15
Variable HelixNo
Center CuttingNo
Chip BreakerNo
Number of Margins4
Self CenteringYes

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