Eagle Cutting Tool S300-021-I Cobalt Jobber Drill 21/64

Product Description

The EAGLE CUTTING TOOL S300-021-I is a 21/64 inch cobalt jobber-length drill bit designed for heavy-duty drilling in metal, stainless steel, cast iron, and other hard materials. Cobalt construction provides superior heat resistance compared to standard high-speed steel, making this bit well suited for sustained drilling cycles where heat buildup is a concern. The jobber-length flute geometry balances rigidity and reach for general-purpose production drilling. Machinists, fabricators, and maintenance technicians working in industrial and commercial settings are the primary users of this bit.

This drill bit is applicable across a broad range of metal fabrication, maintenance, and manufacturing environments. It fits standard drill chucks and magnetic drill press setups that accept the corresponding shank diameter. The 21/64 inch diameter is a commonly specified size for clearance holes, pilot holes, and pre-tap operations in structural and sheet metal work. Both job-site and shop-floor applications are typical use cases for a bit of this type and size.

Key Features

• Cobalt construction for improved heat resistance and extended tool life in hard materials
• 21/64 inch diameter for clearance, pilot, and pre-tap hole applications
• Jobber-length flute design balances reach with rigidity for general-purpose use
• Compatible with standard drill chucks and common drill press setups
• Minimum order quantity of 1, suitable for single-unit replacement purchasing

Compatibility

Designed as a general-purpose jobber drill bit compatible with standard 3-jaw drill chucks and drill press spindles accepting the corresponding shank size, suitable for use in metal drilling applications across industrial and commercial settings.

Installation Notes

This drill bit is installed and operated by machinists, fabricators, or maintenance technicians using standard drill press or handheld drill equipment. Ensure the drill chuck is fully tightened and the workpiece is securely clamped before operation. Use appropriate cutting fluid when drilling hard metals to reduce heat buildup and extend bit life. Follow applicable shop safety practices and PPE requirements when operating rotary cutting tools.

Technical Specifications

• Diameter: 21/64 inch
• Drill Type: Jobber Length
• Material: Cobalt
• Weight: 1.2 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: S300-021-I