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Series 549 HSS High Helix (Parabolic Flute) Straight Shank Jobber Drills
Inch
HSS GT100 jobber drills. For drilling in difficult conditions when swarf congestion prevents an adequate flow of coolant. For use in steel and cast iron having a hardness of up to 1000N/mm2. Not recommended for nickel-chrome steels or similar material. Nitrided lands/polished flues > 2.36mm dia
Manufactured to BS 328, DIN338RN.
| Material | HSS |
| Overall Length | 18mm |
| MFR Part No. | 00549 015.870 |
| Helix Type | High Helix |
| Flute Length | 120mm |
| Shank Diameter Tolerance | F11 |
| Coolant Delivery | External |
| Cutting Direction | Right Hand |
| Flute Type | Parabolic |
| Web Thickness | Form A |
| Number of Flutes | 2 |
| Drill Diameter Tolerance | H8 |
| Flute Construction | Ground flutes |
| Point Angle | 130\u00b0 |
| Series | 549 |
| Finish/Coating | Bright |
| Standards Met | DIN 338 | DIN 1412 |
| Drill Diameter | 5/8in |
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