Eagle Cutting Tool S304-111-I Cobalt Jobber Drill Bit

Product Description

The EAGLE CUTTING TOOL S304-111-I is a size 11 cobalt jobber-length drill bit built for drilling through tough materials including hardened steel, stainless steel, cast iron, and high-strength alloys. Cobalt construction provides increased heat resistance and extended tool life compared to standard high-speed steel bits. The jobber-length design offers a balanced combination of reach and rigidity suitable for general-purpose drilling in production and service environments. This bit weighs 0.4 pounds and is a standard drill size 11, making it a direct fit for most jobber drill applications encountered by machinists, pipefitters, and maintenance trades.

This cobalt jobber drill bit is appropriate for use in both shop and field settings. It is commonly used in metal fabrication, mechanical contracting, and industrial maintenance where drilling into ferrous metals and hard alloys is routine. The size 11 designation places it in the standard numerical drill series, used frequently for clearance holes, pilot holes, and tapping preparation in trade and production work. It can be run in standard drill presses, magnetic base drills, and hand-held power drills with appropriate chuck capacity.

Key Features

• Cobalt construction for superior heat resistance and extended tool life in hard metals
• Jobber-length geometry provides a practical reach-to-rigidity ratio for general drilling
• Size 11 numerical drill designation for use in standard drilling and tapping applications
• Compatible with standard drill press chucks and hand-held power drill setups
• Minimum order quantity of 1, available as a single unit

Compatibility

Designed as a standard size 11 cobalt jobber drill bit suitable for use in drill presses, magnetic base drills, and hand-held power drills with compatible chuck sizes for numerical series drill bits.

Installation Notes

Secure the bit firmly in the chuck before operation and verify there is no runout before drilling. Use appropriate cutting fluid or coolant when drilling hard metals to extend bit life and improve hole quality. Always wear eye protection and secure the workpiece before drilling. Follow applicable shop safety standards and equipment manufacturer guidelines for drill speed selection based on material and bit diameter.

Technical Specifications

• Drill Size: 11 (numerical series)
• Drill Type: Jobber Length
• Material: Cobalt
• Weight: 0.4 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: S304-111-I