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Series 658 HSS-Co High Helix (Parabolic Flute) Straight Shank Jobber DrillsTin Coated -Inch High heat resistant drill with wide chip space. Suitable for drilling alloyed and unalloyed steels and castings with a high tensile strength over 800N/mm2. Particularly suitable for drilling hot and cold rolled steels. Manufactured to DIN 338.Type 658
| Series | 658 |
| Drill Diameter | 7/16in |
| Number of Flutes | 2 |
| Flute Type | Parabolic |
| Point Angle | 130\u00b0 |
| Flute Length | 94mm |
| Finish/Coating | TiN |
| Cutting Direction | Right Hand |
| Standards Met | DIN 338 |
| Web Thickness | Form A |
| Coolant Delivery | External |
| Material | Cobalt High Speed Steel |
| Drill Diameter Tolerance | H8 |
| Flute Construction | Ground flutes |
| MFR Part No. | 00658 011.110 |
| Overall Length | 142mm |
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