Dormer A777 HSCo Heavy-Duty Jobber Drill Bit, 10.50mm
Dormer A777 HSCo drill bit (10.50mm) for tough materials. 135° split point, cobalt steel, aerospace-grade precision. DIN/BS/ISO compliant.
The Dormer A777 HSCo Heavy-Duty Jobber Drill Bit is crafted from high-quality cobalt steel (HSCo), offering exceptional durability and resistance to heat, making it ideal for drilling tough, high-tensile materials. With a precision-engineered 135° split point, this drill bit minimizes walking and ensures accurate hole starting, particularly effective in demanding applications such as aerospace engineering.
Key Features:
- Flute Geometry: Standard helix, right-hand spiral with a thick web for improved strength and chip evacuation.
- Point Angle: Varies by size – 118° conical for 0.30–0.95mm bits, 135° four-facet for 1.00–1.40mm, and 135° split point (NAS 907 Aerospace Spec P3 point) for 1.50mm and above.
- Surface Treatment: Bronze coating enhances corrosion resistance and reduces friction.
- Material: Premium HSCo cobalt steel for superior heat resistance and longevity.
- Spec Compliance: Meets DIN 338 RN, BS328, and ISO 235 standards.
Technical Specifications:
- Tip Diameter: 10.50mm
- Working Length (WL): 87mm
- Overall Length (OL): 133mm
- Weight: 72g
Designed for heavy-duty use, this drill bit excels in applications requiring precision and endurance, ensuring clean, efficient drilling even in the most challenging materials.
- Drilling high-tensile materials
- Aerospace industry applications
- Precision engineering projects
- Heavy-duty metalworking
- Material: HSCo Cobalt Steel
- Surface Treatment: Bronze
- Flute Geometry: Standard Helix, Right-Hand Spiral, Thick Web
- Point Angle: 135° Split Point (for 1.50mm and above)
- Compliance: DIN 338 RN / BS328 / ISO 235
- Tip Diameter: 10.50mm
- Working Length: 87mm
- Overall Length: 133mm
- Weight: 72g
Always follow local regulations and product guidance.
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