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Letter I, 145 Degree Point, Solid Carbide Drill - 50021
SERIES: 120
Series 120 - CFRP 8 Facet
Letter I, 145 Degree Point, 5/16" Shank Dia, 3-1/8" OAL, 2 Flute, 3xD, Di-NAMITE (Diamond) Coated, Series 120, Series 120 - CFRP 8 Facet, Solid Carbide Drill - 50021
Feature & Benefits
- Double margin design stabilizes the drill for greater hole accuracy and improved surface finish
- Notched point reduces thrust force over conventional designs
- 8 facet point reduces fiber breakout and delamination on exit
- 90 degree secondary chamfer angle improves hole entrance and exit quality
| SKU / EDP | 50021 |
|---|---|
| Category | Solid Round Tools > Holemaking > High Performance Drills |
| Min Order Qty | 1 |
| Series | 120 |
| Series Description | Series 120 - CFRP 8 Facet |
| High Performance | Yes |
| Unit (inch/mm) | inch |
| Number of Flutes | 2 |
| Primary Workpiece Material | (N) Non-Ferrous Materials |
| Reach (xD) | 3xD |
| Size | I |
| Cutting Diameter (DC) (Decimal Inch) | 0.2720 |
| Cutting Diameter (DC) (mm) | 6.91 |
| 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) | 1.0469 |
| Usable Length (LU) (Fractional Inch) | 1-3/64 |
| Usable Length (LU) (mm) | 26.59 |
| Flute Length (LCF) (Decimal Inch) | 1.3120 |
| Flute Length (LCF) (mm) | 33.32 |
| 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) | 1.4380 |
| Shank Length (LS) (mm) | 36.53 |
| Point Angle (Degree) | 145 |
| Cutting Diameter (DC) Tolerance (Decimal Inch) | +.00000 / -.00050 |
| Cutting Diameter (DC) Tolerance (mm) | +.0000 / -.0127 |
| Shank Diameter (DCON) Tolerance (ISO) | h6 |
| Shank Type | Straight |
| Weldon Flat | No |
| Coolant Option | External Coolant |
| Coating Description | Diamond (Di-NAMITE) |
| Additional Geometry | Right Hand Cut Direction (RHC) |
| Helix Angle | Right Spiral |
| Helix Angle (Degree) | 20 |
| Variable Helix | No |
| Center Cutting | No |
| Chip Breaker | No |
| Primary Chamfer Angle (a) (Degree) | 145 |
| Secondary Chamfer Angle (a) (Degree) | 90 |
| Number of Margins | 4 |
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