Eagle Cutting Tool C1080-061-D Cobalt Drill Bit 61/64

Product Description

The EAGLE CUTTING TOOL C1080-061-D is a 61/64 inch cobalt screw machine (stub length) drill bit with a 1/2 inch reduced shank, manufactured in the USA. Cobalt high-speed steel construction provides superior heat and wear resistance compared to standard HSS, making this bit suited for drilling stainless steel, hardened alloys, cast iron, and other hard-to-machine materials. The stub-length body offers increased rigidity and reduced deflection, which is critical when drilling tight-tolerance holes in production or maintenance environments. Machinists, tool-and-die workers, and maintenance technicians rely on this style of bit for demanding drilling applications.

This bit is designed for use in drill presses, CNC machining centers, and manual milling machines where a reduced-shank stub drill is required. The 1/2 inch shank allows it to seat in standard 1/2 inch drill chucks or collets without an adapter. It is well suited for metal fabrication shops, industrial maintenance facilities, and production machining operations where drilling hard ferrous and non-ferrous metals at elevated speeds generates significant heat. The screw machine length profile keeps the cutting edge closer to the chuck, improving hole straightness in thicker stock.

Key Features

• Cobalt high-speed steel construction resists heat and abrasion when drilling hard metals
• Stub screw machine length increases rigidity and reduces bit deflection
• 1/2 inch reduced shank fits standard drill chucks and collets without adapters
• 61/64 inch cutting diameter for close-tolerance hole sizing
• USA manufactured for consistent geometry and quality control

Compatibility

Designed as an OEM-style replacement or direct-use drill bit compatible with any drill press, machining center, or hand drill equipped with a 1/2 inch or larger chuck capacity accepting a 1/2 inch straight shank.

Installation Notes

Secure the shank fully in the chuck and verify runout before drilling. Use appropriate cutting fluid or coolant when drilling hardened steels and stainless to extend bit life and maintain cutting edge integrity. Ensure the workpiece is firmly clamped before beginning the cut. Follow applicable shop safety practices and machine guarding requirements during operation.

Technical Specifications

• Cutting Diameter: 61/64 inch
• Shank Diameter: 1/2 inch
• Drill Type: Screw Machine (Stub Length)
• Material: Cobalt High-Speed Steel
• Country of Origin: USA
• Weight: 0.69 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: C1080-061-D