Eagle Cutting Tool 1090D-041-I Drill Bit 41/64 in

Product Description

The EAGLE CUTTING TOOL 1090D-041-I is a 41/64 inch jobber-length drill bit with a 1/2 inch reduced shank, designed for use in standard 3-jaw drill chucks and drilling machines across metalworking, fabrication, and maintenance applications. The DYNO B G designation indicates a bright finish, general-purpose geometry suited for drilling mild steel, aluminum, cast iron, and similar materials. The 1/2 inch shank allows this larger-diameter bit to seat in chucks rated for that capacity, keeping runout low and improving stability during the cut.

This drill bit is a practical choice for machine shops, maintenance technicians, pipefitters, and metalworkers who need a reliable 41/64 inch bore without stepping up to a full 11/16 inch or reaming an undersized hole. Common applications include clearance holes for fasteners, pilot holes ahead of reaming operations, and general through-hole drilling in ferrous and non-ferrous stock. The import-grade construction makes it a cost-effective option for production environments where bit consumption is high.

Key Features

• 41/64 inch cutting diameter with bright general-purpose geometry
• 1/2 inch reduced shank fits standard 1/2 inch capacity drill chucks
• Jobber-length flute for versatile depth-to-diameter drilling
• Suitable for mild steel, aluminum, cast iron, and similar materials
• Import-grade construction suited for high-consumption shop environments

Compatibility

Designed as a general-purpose jobber drill bit for use in drill presses, lathes, and handheld drilling equipment equipped with a 1/2 inch or larger chuck capacity.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician. Secure the shank fully in the chuck and verify there is no visible runout before drilling. Use appropriate cutting fluid for the workpiece material to extend bit life and improve hole quality. Always wear eye protection and secure the workpiece before beginning the cut.

Technical Specifications

• Cutting Diameter: 41/64 inches
• Shank Diameter: 1/2 inch
• Finish: Bright
• Weight: 0.69 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: 1090D-041-I