Dormer A777 HSCo Heavy-Duty Cobalt Jobber Drill Bit 2.50mm
Dormer A777 cobalt jobber drill (2.50mm) for aerospace and tough materials. Heat-resistant with 135° split point.
The Dormer A777 HSCo Heavy-Duty Jobber Drill Bit is engineered for precision and durability, featuring a heavy-duty 135° split point design. This makes it ideal for high-heat drilling applications, particularly in demanding environments such as the aerospace industry and when working with higher tensile, tougher materials.
Key Features:
- Made from HSCo Cobalt steel for superior strength and heat resistance
- Bronze surface treatment enhances durability and performance
- Split point geometry (NAS 907 Aerospace Specification type P3 Point) ensures clean and efficient cutting with reduced walking
- Flute geometry: Standard helix, right-hand spiral, thick web for improved chip evacuation
Specifications:
- Tip Diameter: 2.50mm
- Working Length: 30mm
- Overall Length: 57mm
- Point Angle Variants:
- 0.30mm - 0.95mm: 118° conical point
- 1.00mm - 1.40mm: 135° 4-facet point
- 1.50mm and above: 135° split point (NAS 907 compliant)
Compliant with DIN 338 RN, BS328, and ISO 235 standards, this drill bit delivers reliability and precision for industrial and professional applications.
- Aerospace industry applications
- High-tensile materials drilling
- Tough material drilling
- Industrial metalworking
- Tip Diameter: 2.50mm
- Working Length: 30mm
- Overall Length: 57mm
- Point Angle: 135° split point (1.50mm and above)
- Flute Geometry: Standard helix, right-hand spiral, thick web
- Material: HSCo Cobalt steel
- Surface Treatment: Bronze
- Standards: DIN 338 RN / BS328 / ISO 235
Free standard shipping on U.S. mainland orders. Express shipping options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For defective items, contact us within 14 days for a replacement or refund.
View Full Delivery & Returns PolicySecure Transactions
We take the utmost care with your payment and personal details. Our website uses advanced encryption technology, including Secure Sockets Layer (SSL), to protect your information during transmission. You can verify a secure connection by looking for 'https' and a locked padlock in your browser.
Cookie Policy
Cookies enhance your shopping experience by keeping track of your cart and remembering you when you return. We also use banner advertising based on your browsing history to show products you might be interested in.
Security Warning
Beware of phishing scams! We will never ask for personal details via email. If such information is required, we'll ask you to contact us by phone. If you receive an email requesting sensitive information, do not respond and let us know immediately.
