Dormer A777 HSCo Heavy-Duty 8.5mm Jobber Drill Bit
Professional cobalt steel drill bit with aerospace-grade 135° split point for high-tensile materials. 117mm length, 75mm working length.
The Dormer A777 HSCo Heavy-Duty 8.5mm Jobber Drill Bit is engineered for high-performance drilling in tough materials. Featuring a 135° split point design, specifically developed to handle greater heat generation during drilling, this drill bit excels when working with higher tensile materials, making it particularly suitable for the aerospace industry.
Key Features
- Cobalt steel (HSCo) construction for exceptional strength and heat resistance
- Bronze surface treatment provides increased durability and corrosion resistance
- Heavy-duty split point reduces walking and provides more efficient material penetration
- Complies with aerospace specification NAS 907 type P3 point standards
Drill Geometry by Size Range
- 0.30mm - 0.95mm: 118° conical point
- 1.00mm - 1.40mm: 135° 4-facet point
- 1.50mm and above: 135° split point (aerospace specification compliant)
This premium-quality drill bit meets DIN 338 RN, BS328, and ISO 235 standards, ensuring professional-grade performance. The precision-ground right hand spiral flute with thick web design provides improved rigidity and chip evacuation for clean, accurate drilling operations.
Dimensions
- Overall length: 117mm
- Working length: 75mm
- Tip diameter: 5.80mm
Need larger quantities? Need additional quantities? Get in touch and we'll arrange it for you.
- Dispatched within 0-2 business days
- Delivery to United States: 3-5 business days*
- Free Shipping Included
- High-tensile materials drilling
- Aerospace industry applications
- Precision metalworking
- Industrial manufacturing
- Material: HSCo Cobalt steel
- Surface Treatment: Bronze
- Point Type: 135° Split Point (NAS 907 P3 standard for 1.5mm+)
- Point Angle Variations: 118° (0.3-0.95mm), 135° 4-facet (1.0-1.4mm), 135° split point (1.5mm+)
- Flute Geometry: Right hand spiral, Standard Helix, Thick Web
- Standards: DIN 338 RN / BS328 / ISO 235
- Tip Diameter: 5.80mm
- Working Length: 75mm
- Overall Length: 117mm
- Weight: 38g
Always follow local regulations and product guidance.
Free standard delivery on Canadian 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.
View Full Delivery & Returns PolicySecure Transactions
We take 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 present products of potential interest.
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.
Similar Products
You might like
