Eagle Cutting Tool C1080-039-D Cobalt Drill Bit 39/64 in

Product Description

The EAGLE CUTTING TOOL C1080-039-D is a 39/64-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 elevated heat and wear resistance compared to standard HSS bits, making it well-suited for drilling hard and abrasive materials including stainless steel, cast iron, titanium, and high-strength alloys. The stub-length body increases rigidity and reduces deflection in demanding production and maintenance applications. This bit is used by machinists, pipefitters, millwrights, and industrial maintenance technicians working with metal fabrication or heavy equipment.

The C1080-039-D fits standard 1/2-inch drill chucks found on bench drill presses, magnetic drills, and heavy-duty hand drills. Its screw machine length profile makes it a practical choice for use in tight clearances or on drill press setups where a standard-length bit would introduce unnecessary flex. Typical applications include drilling bolt holes, port clearances, and pilot holes in ferrous and non-ferrous metals across manufacturing, mechanical contracting, and industrial maintenance environments.

Key Features

• 39/64-inch cutting diameter for precise hole sizing in metal fabrication and maintenance work
• Cobalt high-speed steel construction resists heat buildup and extends tool life in hard materials
• Stub screw machine length increases stiffness and reduces bit deflection
• 1/2-inch reduced shank fits standard 1/2-inch drill chucks without an adapter
• Made in the USA

Compatibility

Designed for use in any drill press, magnetic drill, or hand drill equipped with a 1/2-inch chuck. Suitable as a direct replacement or addition for screw machine length cobalt drill bit sets in industrial and trade settings.

Installation Notes

Installation of this drill bit should be performed by a qualified machinist or tradesperson familiar with metal cutting operations. Secure the bit fully in the chuck and verify no runout before beginning a cut. Always wear appropriate PPE including eye protection and cut-resistant gloves when drilling metal. Use cutting fluid or coolant when drilling hard or stainless alloys to preserve bit life and maintain hole tolerance.

Technical Specifications

• Cutting Diameter: 39/64 inches
• Shank Size: 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: C1080-039-D