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.
Need larger quantities? Need additional quantities? Get in touch and we'll arrange it for you.
- 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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