Eagle Cutting Tool SC404-139-D Cobalt Stub Drill Size 39

Product Description

The EAGLE CUTTING TOOL SC404-139-D is a size 39 cobalt stub drill manufactured in the USA. Stub-length drills are shorter than jobber-length equivalents, providing greater rigidity and reduced deflection when drilling in tight spaces or through hard materials. Cobalt construction improves heat resistance and edge retention compared to standard high-speed steel, making this bit well suited for stainless steel, cast iron, hard alloys, and other demanding materials. Tradespeople in HVAC, plumbing, and electrical work reach for stub drills when clearance is limited and precision entry matters.

This drill is appropriate for use in metal fabrication, mechanical rooms, equipment installation, and field service work where a compact drill profile is required. The size 39 designation refers to the wire gauge drill sizing standard, placing this bit in the smaller-diameter range commonly used for pilot holes, tapping prep, and close-tolerance work in sheet metal and structural components. It is suited for use in standard drill chucks and drill presses.

Key Features

• Cobalt construction for improved heat resistance and edge retention on hard materials
• Stub-length body reduces flex and deflection for greater drilling accuracy
• Size 39 wire gauge diameter for pilot holes and tap-prep work
• USA manufactured
• Compact profile suited for restricted-clearance drilling applications

Compatibility

Designed as an OEM-style replacement and standard-duty cutting tool compatible with conventional drill chucks and drill presses accepting wire gauge size 39 stub-length bits.

Installation Notes

This drill bit is installed and used by HVAC technicians, plumbers, electricians, and general trade professionals. Always secure the workpiece before drilling and use appropriate cutting fluid when drilling hard metals to extend bit life. Inspect the cutting edges before each use and replace if chipping or excessive wear is observed. Follow applicable safety standards for rotating cutting tools when operating in the field.

Technical Specifications

• Drill Size: 39 (wire gauge)
• Construction: Cobalt
• Length Type: Stub
• Country of Origin: USA
• Weight: 0.1 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: SC404-139-D