Milwaukee 48-89-2742 Black Oxide Jobber Drill Bit 6 in

Product Description

The MILWAUKEE 48-89-2742 is a black oxide jobber-length twist drill bit engineered for demanding applications in low to high tensile strength materials, including stainless steel and cast iron. Built from industrial-grade steel, this bit features a 135-degree split point that starts on contact to eliminate walking, and a parabolic flute geometry that accelerates chip ejection while reinforcing the bit body. A thicker web adds structural strength for extended service life. The 1/2-inch reduced shank with three milled flats locks securely into a jawed chuck to prevent slippage during high-torque drilling operations. Sold individually.

This drill bit is suited for metal fabrication, maintenance and repair, and general industrial drilling tasks where reliable penetration into hard or tough materials is required. The black oxide coating provides lubricity and corrosion resistance, making it appropriate for use in shop environments and in the field. It fits standard 1/2-inch keyed or keyless chucks, making it compatible with common corded and cordless drill platforms used by electricians, plumbers, pipefitters, HVAC technicians, and general contractors.

Key Features

• 135-degree split point starts on contact and prevents bit walking on hard surfaces
• Parabolic flute geometry clears chips rapidly and adds torsional strength to the bit body
• Thicker web construction extends service life in high-tensile and abrasion-resistant materials
• Three-flat reduced shank design prevents rotation and slippage inside a 1/2-inch chuck
• Black oxide coating reduces friction and resists corrosion for extended bit life
• Jobber length configuration handles both shallow and deeper hole applications

Compatibility

Designed for use in standard 1/2-inch keyed or keyless drill chucks. Suitable for drilling low to high tensile strength materials, stainless steel, and cast iron.

Installation Notes

Installation of this bit should be performed by the appropriate trade professional following standard safe-drilling practices. Secure the three-flat shank fully into the chuck and verify it is firmly tightened before operation. Always wear appropriate eye protection when drilling metal. Power down or disconnect the drill before changing or inspecting bits.

Technical Specifications

• Bit Length: 6 inches
• Shank Type: 1/2 inch reduced shank with 3 milled flats
• Point Angle: 135-degree split point
• Coating: Black oxide
• End Type: Single end
• Package Dimensions: 0.75 x 1.85 x 7.7 inches
• Weight: 0.33 pounds
• UOM: Each

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-89-2742