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Letter N, 145 Degree Point, Solid Carbide Drill - 51612

SERIES: 135

Hi-PerCarb 135

Letter N, 145 Degree Point, 5/16" Shank Dia, 3-1/8" OAL, 2 Flute, 3xD, Ti-NAMITE-A (AlTiN) Coated, Series 135, Hi-PerCarb 135, Solid Carbide Drill - 51612

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 ≤ 50 HRc (≤ 475 Bhn)

SKU / EDP51612
CategorySolid Round Tools > Holemaking > High Performance Drills
Min Order Qty1
Series135
Series DescriptionHi-PerCarb 135
High PerformanceYes
Unit (inch/mm)inch
Number of Flutes2
Primary Workpiece Material(P) Steel|(M) Stainless Steel|(H) Hardened Materials
Secondary Workpiece Material(K) Cast Iron|(N) Non-Ferrous Materials|(S) High Temp Alloy
Reach (xD)3xD
SizeN
Cutting Diameter (DC) (Decimal Inch)0.3020
Cutting Diameter (DC) (mm)7.67
Shank Diameter (DCON) (Decimal Inch)0.3125
Shank Diameter (DCON) (Fractional Inch)5/16
Shank Diameter (DCON) (mm)7.94
Usable Length (LU) (Decimal Inch)1.1875
Usable Length (LU) (Fractional Inch)1-3/16
Usable Length (LU) (mm)30.16
Flute Length (LCF) (Decimal Inch)1.5625
Flute Length (LCF) (Fractional Inch)1-9/16
Flute Length (LCF) (mm)39.69
Overall Length (OAL) (Decimal Inch)3.1250
Overall Length (OAL) (Fractional Inch)3-1/8
Overall Length (OAL) (mm)79.38
Shank Length (LS) (Decimal Inch)1.4375
Shank Length (LS) (Fractional Inch)1-7/16
Shank Length (LS) (mm)36.51
Point Angle (Degree)145
Cutting Diameter (DC) Tolerance (Decimal Inch)+.00024 / +.00083
Cutting Diameter (DC) Tolerance (mm)+.0061 / +.0211
Shank Diameter (DCON) Tolerance (ISO)h6
Shank TypeStraight
Weldon FlatNo
Coolant OptionExternal Coolant
Coating DescriptionAlTiN (Ti-NAMITE-A)
Additional GeometryRight Hand Cut Direction (RHC)
Helix AngleRight Spiral
Helix Angle (Degree)32
Variable HelixNo
Center CuttingNo
Chip BreakerNo
Number of Margins4
Self CenteringYes

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