Eagle Cutting Tool C1090-061-I Cobalt Stub Drill Bit

Product Description

The EAGLE CUTTING TOOL C1090-061-I is a 61/64-inch cobalt stub drill bit with a 1/2-inch reduced shank, built for demanding metal drilling applications in industrial and trade environments. The cobalt construction provides heat resistance and edge retention when drilling through hard materials such as stainless steel, cast iron, hardened alloys, and high-tensile metals. The stub length geometry offers greater rigidity than a standard jobber drill, reducing deflection and improving hole accuracy in tight or shallow-clearance setups. This bit is suited for machinists, pipefitters, and fabricators working with drill presses, magnetic drills, or heavy-duty hand drills equipped with a 1/2-inch chuck.

This drill bit is designed for use in metalworking and fabrication settings where hole diameter precision and bit durability are critical. The 61/64-inch diameter is commonly used when preparing holes for tapping, reaming, or close-tolerance fastener fitment. The 1/2-inch shank makes it compatible with standard 1/2-inch chucks on drill presses and hand drills. It is appropriate for both production shop use and field service work where cobalt performance is needed over standard high-speed steel.

Key Features

• 61/64-inch cutting diameter for close-tolerance drilling applications
• Cobalt construction delivers superior heat and wear resistance compared to standard HSS bits
• Stub length body provides added rigidity and reduced deflection in shallow drilling setups
• 1/2-inch reduced shank fits standard 1/2-inch drill press and hand drill chucks
• Suitable for stainless steel, cast iron, hardened alloys, and other hard metals

Compatibility

Designed for use in any drill press, magnetic drill, or hand drill equipped with a 1/2-inch chuck. Intended as an industrial-grade cobalt stub drill for metalworking and fabrication applications.

Installation Notes

This bit should be installed and operated by qualified machinists or trade professionals familiar with metal drilling procedures. Ensure the drill chuck is fully tightened and the workpiece is secured before operation. Use appropriate cutting fluid when drilling hard metals to extend bit life and maintain hole quality. Always wear proper eye and hand protection when operating rotary cutting tools.

Technical Specifications

• Cutting Diameter: 61/64 inches
• Shank Diameter: 1/2 inch
• Drill Type: Stub Length
• Material: Cobalt
• Weight: 0.69 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: C1090-061-I