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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.
| Coolant Delivery | External |
| MFR Part No. | 00549 001.250 |
| Series | 549 |
| Cutting Direction | Right Hand |
| Material | HSS |
| Overall Length | 38mm |
| Point Angle | 130\u00b0 |
| Shank Diameter Tolerance | F11 |
| Flute Construction | Ground flutes |
| Web Thickness | Form A |
| Drill Diameter Tolerance | H8 |
| Finish/Coating | Bright |
| Helix Type | High Helix |
| Number of Flutes | 2 |
| Flute Type | Parabolic |
| Flute Length | 16mm |
| Standards Met | DIN 338 | DIN 1412 |
| Drill Diameter Metric | 1.25mm |
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