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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.
| Number of Flutes | 2 |
| Drill Diameter Tolerance | H8 |
| Web Thickness | Form A |
| Material | HSS |
| Standards Met | DIN 338 | DIN 1412 |
| Flute Type | Parabolic |
| Flute Length | 75mm |
| Series | 549 |
| Point Angle | 130\u00b0 |
| Drill Diameter | 8.3mm |
| Coolant Delivery | External |
| Overall Length | 117mm |
| Finish/Coating | Bright |
| Drill Diameter Metric | 8.3mm |
| Product Type | Jobber Drills |
| Shank Diameter Tolerance | F11 |
| Cutting Direction | Right Hand |
| MFR Part No. | 00549 008.300 |
| Helix Type | High Helix |
| Flute Construction | Ground flutes |
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