Eagle Cutting Tool J100-021-D Hss Jobber Drill 21/64

Product Description

The EAGLE CUTTING TOOL J100-021-D is a 21/64-inch high-speed steel (HSS) jobber-length drill bit manufactured in the USA. Jobber-length drills are the standard general-purpose length used in hand drills, drill presses, and CNC equipment across metalworking, fabrication, and mechanical trades. HSS construction provides the hardness and heat resistance needed to cut through mild steel, aluminum, copper, plastics, and similar materials without rapid edge breakdown. This bit is a workhorse for electricians, plumbers, HVAC technicians, and machinists who need a reliable fractional drill at a common pilot or clearance size.

The J100-021-D is suited for residential and commercial trade applications where a 21/64-inch hole is required. Common uses include drilling clearance holes for 5/16-inch fasteners, conduit penetrations, pipe work, bracket mounting, and sheet metal fabrication. The jobber-length body balances reach and rigidity, making it practical for use in standard three-jaw chucks and quick-change systems alike.

Key Features

• 21/64-inch diameter HSS jobber-length drill bit
• High-speed steel construction for cutting steel, aluminum, copper, and plastics
• Standard jobber length for compatibility with most drill chucks and presses
• USA manufactured
• Minimum order quantity of 1 — available as a single unit

Compatibility

Designed as a standard jobber-length fractional drill bit compatible with any 3/8-inch or 1/2-inch keyed or keyless drill chuck accepting round-shank bits.

Installation Notes

Install this bit in a properly sized chuck and tighten securely before operation. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend edge life and reduce heat buildup. Always wear eye protection and secure the workpiece before drilling. Refer to applicable safety standards and site requirements for drill press or power tool operation.

Technical Specifications

• Diameter: 21/64 inches
• Material: High-Speed Steel (HSS)
• Length Type: Jobber
• Country of Origin: USA
• Weight: 1.2 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: J100-021-D