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Series A777 HSS-Co heavy duty jobber drills are ideal for applications where more heat is generated, such as machining higher tensile materials. Their high-speed steel/cobalt construction makes them durable even when working in tough conditions.
Features and Benefits
Excellent for drilling higher tensile, tougher materials
135 split point for improved precision and finish (over 1.5mm)
Typical Applications
Drilling
Alloy steel
Tempered steel
Hardened steel
Malleable cast iron
Titanium
Nickel alloy
Aerospace
Standards
Manufactured to BS 328, DIN 338.
| Number of Flutes | 2 |
| Drill Diameter Metric | 8.1mm |
| Point Type | Split Point |
| Drill Diameter | 8.1mm |
| Drill Diameter Tolerance | H8 |
| Flute Construction | Ground flutes |
| Flute Length | 75mm |
| Cutting Direction | Right Hand |
| Point Angle | 135\u00b0 |
| MFR Part No. | A7778.1 |
| Helix Type | Normal Helix |
| Standards Met | BS 328 | DIN 338 |
| Coolant Delivery | External |
| Finish/Coating | Bronze |
| Series | A777 |
| Material | Cobalt High Speed Steel |
| Flute Type | Spiral |
| Overall Length | 117mm |
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