Dormer A777 HSCo Heavy-Duty Jobber Drill Bit, 3.30mm
Heavy-duty cobalt steel drill bit with 135° split point for aerospace & industrial applications. 3.30mm tip, 36mm working length.
The Dormer A777 HSCo Heavy-Duty Jobber Drill Bit is designed for professionals requiring precision and durability in drilling applications. Featuring a 135° split point, these bits are ideal for high-heat scenarios, making them perfect for drilling into higher tensile, tougher materials, especially in the aerospace industry.
Key Features
- Material: High-speed cobalt steel (HSCo) for enhanced hardness and heat resistance
- Flute Geometry: Standard helix, right-hand spiral with a thick web for improved strength
- Surface Treatment: Bronze finish for reduced friction and longer tool life
- Compliant Standards: DIN 338 RN / BS328 / ISO 235 for quality assurance
Point Specifications
- 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)
Dimensions
- Tip Diameter: 3.30 mm
- Working Length: 36 mm
- Overall Length: 65 mm
Whether you're working in industrial manufacturing or aerospace engineering, the Dormer A777 drill bit offers superior performance and longevity for demanding applications.
- High-tensile materials
- Aerospace industry applications
- Industrial metalworking
- Precision drilling tasks
- Material: HSCo Cobalt steel
- Flute Geometry: Standard Helix, Right hand spiral, Thick Web
- Surface Treatment: Bronze
- Compliant Standards: DIN 338 RN / BS328 / ISO 235
- Point Angle (3.30mm): 135° split point (NAS 907 Aerospace Specification)
- Tip Diameter: 3.30mm
- Working Length: 36mm
- Overall Length: 65mm
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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