Eagle Cutting Tool 1090D-057-I Drill Bit 57/64 in

Product Description

The EAGLE CUTTING TOOL 1090D-057-I is a 57/64-inch Bright Gold Dyno SD twist drill bit with a 1/2-inch straight shank. Designed for demanding drilling applications in metal and hard materials, this bit features a split-point geometry that helps reduce walking on entry and promotes cleaner, faster starts. The Bright Gold finish indicates a surface treatment that aids in heat dissipation and extends cutting life during high-speed drilling operations. This bit is sized for use in 1/2-inch chuck capacity drills and is suited for installation by machinists, maintenance technicians, pipefitters, and industrial tradespeople who need reliable performance in production or field environments.

This drill bit is appropriate for use in stationary drill presses or handheld drill drivers equipped with a 1/2-inch chuck. The 57/64-inch diameter makes it a practical choice for creating bolt clearance holes, enlarging existing bores, or matching specific hole tolerances in metal fabrication, mechanical maintenance, and HVAC or plumbing rough-in applications where larger-diameter holes are required through steel or similar materials.

Key Features

• 57/64-inch cutting diameter for precise large-bore hole sizing
• 1/2-inch straight shank compatible with standard 1/2-inch chuck drill equipment
• Bright Gold finish aids heat dissipation and extends cutting tool life
• Dyno SD split-point tip design reduces bit walking and improves entry accuracy
• Lightweight at 0.69 pounds for easy handling and tool changes

Compatibility

Designed for use in any drill press or handheld drill with a 1/2-inch chuck capacity. Suitable as a direct-fit replacement or addition to standard twist drill bit sets requiring a 57/64-inch cutting diameter.

Installation Notes

This bit is installed and used by machinists, maintenance technicians, and skilled tradespeople familiar with rotary cutting tools. Secure the shank fully in the chuck and verify the bit is centered before beginning a cut. Always wear appropriate eye protection and use proper cutting fluid or lubricant when drilling through steel or hard metals. Inspect the cutting edges for wear or chipping before each use and replace the bit if the tip is damaged.

Technical Specifications

• Cutting Diameter: 57/64 inches
• Shank Size: 1/2 inch
• Shank Type: Straight
• Finish: Bright Gold
• Point Type: Dyno SD Split Point
• Weight: 0.69 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: 1090D-057-I