Dormer A777 HSCo Heavy-Duty Jobber Drill Bit, 10.50mm

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.