Eagle Cutting Tool SC400-031-D Cobalt Stub Drill 31/64

Product Description

The EAGLE CUTTING TOOL SC400-031-D is a cobalt stub drill with a 31/64 inch diameter, designed for drilling through tough materials in demanding trade and industrial applications. Cobalt construction provides increased heat resistance and hardness compared to standard high-speed steel, making it suitable for stainless steel, cast iron, hard alloys, and other abrasive workpieces. The stub-length body offers a shorter flute and overall length than a jobber drill, reducing deflection and improving rigidity in tight spaces or on drill presses. This drill is manufactured in the USA.

The SC400-031-D is used in metal fabrication, mechanical contracting, plumbing rough-in, HVAC equipment installation, and general maintenance applications where a rigid, short-length drill is required. The 31/64 inch diameter makes it a common choice for close-tolerance hole sizing before reaming or for specific fastener clearance applications. It is suitable for use in bench drill presses, magnetic drills, and hand drills with appropriate chuck capacity.

Key Features

• Cobalt construction for improved heat resistance and extended tool life in hard materials
• Stub-length design reduces deflection and increases rigidity during drilling
• 31/64 inch diameter suits close-tolerance and fastener clearance applications
• USA manufactured
• Minimum order quantity of 1 — sold individually

Compatibility

Designed as a stub-length cobalt drill for use in standard drill presses, magnetic drills, and hand drills capable of accepting a 31/64 inch shank.

Installation Notes

Cobalt stub drills are typically used by machinists, pipefitters, HVAC technicians, and electricians for precise hole drilling in metal substrates. Ensure the workpiece is securely clamped before drilling and use appropriate cutting fluid or oil to extend bit life and reduce heat buildup. Inspect the cutting edges before each use and replace if chipping or dulling is observed. Follow applicable shop safety standards and PPE requirements when operating rotary cutting tools.

Technical Specifications

• Diameter: 31/64 inch
• Drill Type: Stub Length
• Material: Cobalt
• Country of Origin: USA
• Weight: 0.95 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: SC400-031-D