Milwaukee 48-89-2744 Black Oxide Jobber Drill Bit 6in

Product Description

The MILWAUKEE 48-89-2744 is a black oxide jobber-length twist drill bit built for professionals drilling in low to high tensile strength materials, stainless steel, and cast iron. The bit is machined from industrial-grade steel and features a 135-degree split point that starts on contact without walking. A parabolic flute geometry clears chips quickly and adds structural rigidity to the body. The 1/2-inch reduced shank includes three milled flats that lock the bit firmly in a jawed chuck and prevent slippage under load. Designed for single-end use, this bit ships one per package and is suited for repeated daily use in production or field drilling applications.

This bit is intended for use in metal fabrication, mechanical, and general trade work where consistent hole quality in tough materials is required. It performs in both portable handheld drills and bench-mounted drill presses equipped with 1/2-inch chucks. The reduced shank design makes it compatible with standard 1/2-inch drill chucks without requiring a larger machine. Licensed tradespeople including pipefitters, ironworkers, and general contractors will find this bit appropriate for structural and finish drilling tasks in ferrous and high-tensile materials.

Key Features

• 135-degree split point starts on contact and eliminates the need for a center punch on most materials
• Parabolic flute geometry accelerates chip ejection and reduces heat buildup during deep drilling
• Thicker web construction increases torsional strength and extends service life
• Three-flat reduced shank prevents rotation in 1/2-inch jawed chucks
• Black oxide coating provides corrosion resistance and surface lubricity

Compatibility

Designed for use in 1/2-inch capacity drill chucks on standard handheld drills and drill presses; compatible with low to high tensile strength metals, stainless steel, and cast iron.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with metalworking drill practices. Secure the bit fully in the chuck and verify all three flats are engaged before operating. Always wear appropriate eye protection and secure the workpiece before drilling. Reduce feed pressure when the drill bit is about to break through material to prevent grabbing.

Technical Specifications

• Shank Type: 1/2 inch reduced shank with 3 milled flats
• Point Angle: 135 degrees split point
• Coating: Black oxide
• End Type: Single end
• Overall Length: 6 inches
• Package Dimensions: 0.7 x 1.87 x 7.76 inches
• Weight: 0.37 pounds
• Sold As: Each

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-89-2744