Dormer A777 HSCo Heavy-Duty Jobber Drill Bit 3.20mm
Dormer A777 HSCo drill bit (3.20mm) for aerospace & high-tensile materials. 135° split point with bronze coating.
The Dormer A777 HSCo Heavy-Duty Jobber Drill Bit is engineered for demanding drilling applications where high temperatures are encountered. Manufactured from HSCo Cobalt steel, these drill bits feature a heavy-duty 135° split point, making them ideal for drilling tougher, high-tensile materials, especially in the Aerospace Industry. The thick web and standard right-hand helix flute geometry ensure both durability and efficiency.
Key Features:
- 135° split point (for sizes 1.50mm and above) reduces walking and increases precision.
- 118° conical point for smaller sizes (0.30mm - 0.95mm).
- 135° 4-facet point for sizes 1.00mm - 1.40mm.
- Bronze surface treatment enhances wear resistance and heat dissipation.
- Complies with DIN 338 RN / BS328 / ISO 235 standards.
Dimensions:
- Tip Diameter: 3.20mm
- Working Length: 36mm
- Overall Length: 65mm
With superior heat resistance and reduced walking, the Dormer A777 is perfect for professionals who require precision and longevity in heavy-duty drilling applications.
- High-tensile material drilling
- Aerospace industry applications
- Precision drilling tasks
- Heavy-duty industrial use
- Material: HSCo Cobalt steel
- Flute Geometry: Standard Helix, Right-hand spiral, Thick Web
- Point Angle: Varies by size (118° Conical, 135° 4-Facet, 135° Split Point)
- Surface Treatment: Bronze
- Standards: DIN 338 RN / BS328 / ISO 235
- Tip Diameter: 3.20mm
- Working Length: 36mm
- Overall Length: 65mm
- Weight: 75g
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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