Milwaukee 48-89-2731 Black Oxide Jobber Drill Bit 6 in

Product Description

The MILWAUKEE 48-89-2731 is a black oxide jobber length drill bit engineered for extreme durability and extended service life in demanding trade applications. Built around the Thunderbolt web design, the bit features a thicker core than a standard jobber bit, providing greater resistance to side-load breakage under heavy use. The 135-degree split point tip starts on contact for a precise, walking-free entry, while the parabolic flute geometry clears chips quickly to reduce heat buildup and maintain cutting speed. At 6 inches in length, this bit is sized for general-purpose jobber applications across metal, wood, and PVC substrates.

This bit is suited for residential and light commercial service work where a portable drill is the primary tool. The 3-flat shank design locks firmly in standard drill chucks and the reduced shank diameter allows use in 3/8-inch chucks, making it compatible with a wide range of portable drills found on job sites. Black oxide coating provides surface lubricity and corrosion resistance, extending bit life between replacements. HVAC techs, plumbers, electricians, and general contractors will find this bit effective for panel knock-outs, framing penetrations, and PVC work.

Key Features

• Thicker Thunderbolt web core resists side-load breakage for longer service life
• 135-degree split point tip starts on contact and prevents walking for accurate hole placement
• Parabolic flute form evacuates chips fast, reducing heat and improving cut speed
• 3-flat shank holds securely in drill chuck to prevent slipping under torque
• Reduced shank diameter fits 3/8-inch chucks for compatibility with compact portable drills
• Black oxide coating adds lubricity and resists corrosion

Compatibility

Designed for use with standard 3/8-inch and larger keyed or keyless drill chucks in portable corded and cordless drills. Effective for drilling metal, wood, and PVC.

Installation Notes

Installation of this bit is performed by licensed tradespeople or qualified users following standard drilling safety practices. Secure the bit fully in the chuck before operation and confirm the chuck is tightened at all flats. Always wear appropriate eye protection when drilling. Do not use this bit in a hammer-drill mode.

Technical Specifications

• Overall Length: 6 inches
• Point Angle: 135 degrees split point
• Shank Type: 3-flat reduced shank
• Coating: Black oxide
• Compatible Materials: Metal, wood, PVC
• Weight: 0.14 pounds

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-89-2731