Eagle Cutting Tool C1090-049-I Cobalt Drill Bit 49/64

Product Description

The EAGLE CUTTING TOOL C1090-049-I is a 49/64 inch cobalt screw machine (stub length) drill bit with a 1/2 inch reduced shank. Cobalt construction provides heat resistance and edge retention when drilling hard metals, stainless steel, and other tough materials that would quickly degrade standard high-speed steel bits. The stub-length body delivers added rigidity and reduced deflection compared to jobber-length drills, making it well suited for production drilling where hole location accuracy matters. This bit is imported and designed for professional use in machine shop, fabrication, and maintenance trade environments.

This drill bit is used in metalworking applications where a large-diameter hole must be produced in a single pass or as a finishing drill to bring a bored or reamed hole to final size. The 1/2 inch shank allows it to seat in standard 1/2 inch drill chucks found on drill presses, milling machines, and heavy-duty hand drills. Typical users include machinists, pipefitters, ironworkers, millwrights, and maintenance mechanics working with ferrous and non-ferrous metals.

Key Features

• 49/64 inch cutting diameter in a screw machine stub-length profile for added rigidity
• Cobalt alloy construction resists heat buildup during high-speed or interrupted cutting
• 1/2 inch reduced shank fits standard drill press and machine chucks without an adapter
• Stub-length design minimizes deflection and improves hole straightness in metalworking operations
• Minimum order quantity of 1, available as a single unit

Compatibility

Designed as an OEM-style replacement or direct substitute for 49/64 inch cobalt screw machine drill bits with a 1/2 inch shank, compatible with any drill press, milling machine, or heavy-duty drill chuck accepting a 1/2 inch straight shank.

Installation Notes

This bit is installed by a machinist or qualified trade professional into a 1/2 inch drill chuck; confirm the chuck is fully tightened before operation. Secure the workpiece firmly before drilling to prevent movement. Use appropriate cutting fluid for the material being drilled to extend tool life and maintain cut quality. Follow applicable shop safety standards and wear appropriate PPE including eye protection whenever operating drilling equipment.

Technical Specifications

• Cutting Diameter: 49/64 inch
• Shank Diameter: 1/2 inch
• 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: C1090-049-I