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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.
| Overall Length | 109mm |
| Cutting Direction | Right Hand |
| Point Angle | 130\u00b0 |
| Web Thickness | Form A |
| Flute Construction | Ground flutes |
| MFR Part No. | 00549 007.140 |
| Coolant Delivery | External |
| Drill Diameter Tolerance | H8 |
| Shank Diameter Tolerance | F11 |
| Helix Type | High Helix |
| Series | 549 |
| Material | HSS |
| Drill Diameter | 9/32in |
| Flute Length | 69mm |
| Flute Type | Parabolic |
| Number of Flutes | 2 |
| Standards Met | DIN 338 | DIN 1412 |
| Finish/Coating | Bright |
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