Milwaukee 48-89-2513 Cobalt Jobber Drill Bit 3.7 in Metric

Product Description

The MILWAUKEE 48-89-2513 is a cobalt jobber-length twist drill bit engineered for hard metal drilling applications. It features a variable helix geometry with an aggressive 35-degree angle that transitions to 15 degrees, promoting rapid chip evacuation and limiting heat buildup during extended use. The 135-degree split point tip provides a self-centering start, eliminating the need for a center punch and preventing bit walk on curved or flat metal surfaces. This bit is sized to metric specifications and is sold individually. Licensed electricians, pipefitters, ironworkers, and general tradespeople working with hard metals will find this bit suited to demanding production or service work.

This drill bit is designed for tough hard metal drilling tasks including stainless steel, high-strength alloys, and other difficult ferrous materials. The cobalt construction improves heat resistance compared to standard high-speed steel or black oxide bits, making it a practical choice for repetitive hole-making on metal fabrication, mechanical, or structural applications. The jobber-length geometry fits standard drill chucks and is compatible with corded and cordless drills as well as drill presses.

Key Features

• Variable helix design transitions from 35 degrees to 15 degrees for rapid chip removal and reduced heat buildup
• 135-degree split point tip for precision self-centering start with no walking
• Cobalt construction rated for up to 10 times the service life versus black oxide drill bits in hard metal applications
• Chip breaker geometry reduces friction and thermal load during drilling
• Secure grip shank helps prevent slipping in drill chuck
• Metric sizing for use in metric-spec applications

Compatibility

Designed as an OEM-style jobber-length drill bit compatible with standard 3-jaw drill chucks on corded drills, cordless drills, and benchtop or floor-model drill presses used in metal drilling applications.

Installation Notes

Installation of this bit is performed by electricians, pipefitters, ironworkers, sheet metal workers, and maintenance technicians. Secure the bit fully in the drill chuck before operation and confirm the chuck key is removed or the keyless chuck is fully tightened. Use appropriate cutting fluid or lubricant when drilling hard metals to extend bit life and maintain hole quality. Eye protection and appropriate work-holding fixtures are standard practice when drilling metal.

Technical Specifications

• Drill Bit Length: 3.7 inches
• Package Length: 5.7 inches
• Package Width: 1.9 inches
• Package Height: 0.25 inches
• Weight: 0.04 pounds
• Point Angle: 135 degrees split point
• Sizing Standard: Metric
• Sold As: Each
• UPC: 045242519439

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-89-2513