Dormer A777 HSCo Heavy-Duty Jobber Drill Bit 9mm, Cobalt Steel
Professional-grade Dormer A777 cobalt steel drill bit (9mm) for aerospace & high-tensile materials. 135° split point design.
The Dormer A777 HSCo Heavy-Duty Jobber Drill Bit is engineered for professional use in demanding applications. Made from high-performance cobalt steel (HSCo), this drill bit features a 135° split point, ideal for drilling tougher materials where greater heat is generated, such as in the aerospace industry. Its heavy-duty construction ensures durability and precision even under extreme conditions.
Key Features
- Material: HSCo Cobalt steel for superior strength and heat resistance
- Flute Geometry: Standard helix, right-hand spiral, thick web
- Point Angles:
- 0.30 mm - 0.95 mm: 118° Conical point
- 1.00 mm - 1.40 mm: 135° 4-facet point
- 1.50 mm and above: 135° split point (NAS 907 Aerospace Specification type P3 Point)
- Surface Treatment: Bronze for reduced friction and extended tool life
Specifications
- Tip Diameter: 9.0 mm
- Working Length: 81 mm
- Overall Length: 125 mm
Certified to DIN 338 RN, BS328, and ISO 235 standards, the Dormer A777 offers reliable performance for professionals working with high-tensile materials.
- Aerospace industry applications
- Drilling high-tensile materials
- Heavy-duty metalworking
- Material: HSCo Cobalt steel
- Flute Geometry: Standard Helix, Right-hand spiral, Thick Web
- Point Angle: Varies by size (see description for details)
- Surface Treatment: Bronze
- Tip Diameter: 9.0 mm
- Working Length: 81 mm
- Overall Length: 125 mm
- Weight: 42 g
- Standards: DIN 338 RN, BS328, ISO 235
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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