Dormer A777 HSCo Heavy-Duty Cobalt Jobber Drill Bit, 5mm x 52mm
Dormer A777 cobalt drill bit (5mm x 52mm) for tough materials and aerospace applications. Heavy-duty 135° split point design.
The Dormer A777 HSCo Heavy-Duty Cobalt Jobber Drill Bit is designed for high-performance drilling applications, especially where greater heat is generated during operation. This metric cobalt drill bit features a robust 135° split point, making it ideal for drilling into higher tensile and tougher materials, with particular suitability for aerospace industry applications.
Key Features:
- Material: HSCo Cobalt steel for superior durability and heat resistance.
- Point Geometry:
- 0.30mm to 0.95mm: 118° conical point.
- 1.00mm to 1.40mm: 135° 4-facet point.
- 1.50mm and above: 135° split point (NAS 907 Aerospace Specification type P3 Point).
- Flute Geometry: Standard helix, right-hand spiral, thick web for efficient chip removal.
- Surface Treatment: Bronze finish for reduced friction and extended tool life.
Specifications:
- Tip Diameter: 5.0mm
- Working Length: 52mm
- Overall Length: 86mm
- Compliance: DIN 338 RN / BS328 / ISO 235 standards.
This drill bit is engineered for precision and reliability, even in the most demanding drilling scenarios.
- Drilling high-tensile materials
- Aerospace industry applications
- General heavy-duty metalworking
- Precision drilling in tough alloys
- Material: HSCo Cobalt steel
- Point Angle: 135° split point (for 1.50mm and above)
- Flute Geometry: Standard helix, right-hand spiral, thick web
- Surface Treatment: Bronze
- Working Length: 52mm
- Overall Length: 86mm
- Tip Diameter: 5.0mm
- Weight: 10g
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
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