Eagle Cutting Tool C1090-062-I Cobalt Drill Bit 31/32 in

Product Description

The EAGLE CUTTING TOOL C1090-062-I is a 31/32-inch cobalt screw machine (stub length) drill bit with a 1/2-inch reduced shank. Cobalt construction provides enhanced heat resistance and edge retention compared to standard high-speed steel, making this bit suited for drilling hard and abrasive materials including stainless steel, cast iron, and hardened alloys. The stub-length body offers added rigidity and reduced deflection during drilling operations. Machinists, fabricators, and maintenance technicians reach for this bit when accuracy and tool life matter in demanding production or field environments.

This drill bit is designed for use in standard drill presses, milling machines, and hand-held power drills equipped with a 1/2-inch or larger chuck. The 31/32-inch diameter makes it a common choice for through-hole drilling, clearance holes, and pre-bore operations where a precise near-1-inch diameter is required. Suitable for metalworking applications in industrial, commercial, and mechanical maintenance settings.

Key Features

• Cobalt construction for improved heat resistance and longer tool life in hard materials
• 31/32-inch cutting diameter for precision near-1-inch bore applications
• 1/2-inch reduced shank for compatibility with standard 1/2-inch chuck equipment
• Stub-length (screw machine) design increases rigidity and reduces bit deflection
• Minimum order quantity of 1 — available as a single unit

Compatibility

Designed as a standard screw machine drill bit for use in drill presses, CNC machines, and power drills with a 1/2-inch or larger chuck capacity.

Installation Notes

Secure the shank fully in the chuck before operation and verify the chuck is tightened with a chuck key where applicable. Use appropriate cutting fluid or coolant when drilling ferrous metals to extend edge life and manage heat buildup. Operators should wear appropriate eye protection and secure the workpiece firmly before drilling. Follow applicable shop safety standards and equipment manufacturer guidelines for speed and feed settings.

Technical Specifications

• Cutting Diameter: 31/32 inches
• Shank Diameter: 1/2 inch
• Drill Style: Screw Machine (Stub Length)
• Material: Cobalt
• Weight: 0.69 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: C1090-062-I