Eagle Cutting Tool C1090-040-I Cobalt Drill Bit 5/8 in

Product Description

The EAGLE CUTTING TOOL C1090-040-I is a 5/8-inch cobalt screw machine (stub length) drill bit with a 1/2-inch shank diameter. Cobalt construction provides elevated heat resistance compared to standard high-speed steel, making it well suited for drilling through harder materials such as stainless steel, cast iron, and hardened alloys. The stub-length body offers increased rigidity and reduced deflection, which improves hole accuracy in production and maintenance drilling applications. This bit is imported and designed for use in stationary drill presses and heavy-duty portable drills fitted with a 1/2-inch chuck.

This drill bit is appropriate for metalworking applications in commercial, industrial, and maintenance settings. Electricians, pipefitters, millwrights, and general maintenance technicians commonly use screw machine drill bits where rigidity and cutting performance in ferrous metals are required. The 1/2-inch shank allows direct chucking in standard 1/2-inch drill presses and handheld power drills without the need for a reducer sleeve.

Key Features

• Cobalt alloy construction for improved heat resistance and tool life in hard metals
• 5/8-inch cutting diameter for common structural and mechanical drilling tasks
• Stub-length (screw machine) body increases rigidity and reduces bit deflection
• 1/2-inch straight shank compatible with standard 1/2-inch chucks
• Minimum order quantity of 1 unit

Compatibility

Designed for use in any drill press or heavy-duty power drill equipped with a 1/2-inch or larger chuck. Suitable for drilling stainless steel, mild steel, cast iron, and similar hard ferrous materials.

Installation Notes

Secure the bit firmly in the chuck and verify it is properly seated before operation. Use cutting fluid or coolant when drilling hard metals to extend tool life and prevent overheating. Ensure the workpiece is clamped securely to prevent rotation during drilling. Follow all applicable shop safety practices and relevant OSHA guidelines when operating drill presses or handheld power tools.

Technical Specifications

• Cutting Diameter: 5/8 inches
• Shank Diameter: 1/2 inches
• Drill Type: Screw Machine (Stub Length)
• Material: Cobalt
• Weight: 0.69 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: C1090-040-I