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Series 549 HSS High Helix (Parabolic Flute) Jobber Drills
Metric
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 > 2.36mm dia
Manufactured to BS 328, DIN338RN.
| Material | HSS |
| Flute Type | Parabolic |
| Series | 549 |
| Drill Diameter Tolerance | H8 |
| Product Type | Jobber Drills |
| Coolant Delivery | External |
| Helix Type | High Helix |
| Finish/Coating | Bright |
| Point Angle | 130\u00b0 |
| Number of Flutes | 2 |
| Drill Diameter | 8.9mm |
| Flute Construction | Ground flutes |
| Cutting Direction | Right Hand |
| Flute Length | 81mm |
| MFR Part No. | 00549 008.900 |
| Web Thickness | Form A |
| Standards Met | DIN 338 | DIN 1412 |
| Drill Diameter Metric | 8.9mm |
| Overall Length | 125mm |
| Shank Diameter Tolerance | F11 |
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