Milwaukee 48-89-2509 Cobalt Jobber Drill Bit 3 Inches

Product Description

The MILWAUKEE 48-89-2509 is a cobalt jobber-length drill bit engineered for hard metal drilling applications. Built with a variable helix design that transitions from a 35-degree cutting angle down to 15 degrees, the bit promotes rapid chip evacuation and limits heat buildup during prolonged use. The 135-degree split point tip starts on contact without walking, delivering fast and accurate hole placement. Licensed electricians, pipefitters, ironworkers, and general trade contractors use this bit when working with stainless steel, high-alloy metals, and other hard materials that wear out standard twist bits quickly.

This drill bit is suited for jobsite and shop use wherever hard metal drilling is required. The variable helix geometry makes it effective across a broad range of twist drilling applications, from thin sheet metal to thick structural stock. A chip breaker feature further reduces heat at the cutting edge, extending service intervals compared to standard black oxide bits. The secure-grip shank geometry helps prevent slippage in standard drill chucks.

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 starts on contact and prevents walking for accurate hole placement
• Chip breaker geometry decreases heat accumulation at the cutting edge
• Secure-grip shank reduces slippage in standard drill chucks
• Rated for up to 10 times the service life compared to black oxide drill bits in hard metal applications
• Suitable for all standard twist drilling applications

Compatibility

Designed as a jobber-length cobalt twist drill bit compatible with standard drill chucks used in corded and cordless drilling applications across hard metal and general-purpose twist drilling.

Installation Notes

This bit is installed by a trade professional or qualified operator using a standard drill press, corded drill, or heavy-duty cordless drill. Before changing bits, ensure the tool is powered off and the chuck is fully released. Use appropriate cutting fluid or coolant when drilling hard or stainless alloys to maximize bit life. Secure the workpiece firmly before drilling to prevent movement and reduce risk of injury.

Technical Specifications

• Length: 3 inches
• Package Length: 5.7 inches
• Package Width: 1.9 inches
• Package Height: 0.15 inches
• Weight: 0.03 pounds
• Split Point Angle: 135 degrees
• Helix Angle Range: 15 to 35 degrees
• Unit of Measure: Each
• UPC: 045242519392

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-89-2509