Milwaukee 48-89-2729 Black Oxide Jobber Drill Bit 6 in

Product Description

The MILWAUKEE 48-89-2729 is a black oxide jobber length drill bit built for demanding jobsite conditions. The Thunderbolt design uses a thicker web core than standard bits to resist side-load breakage and extend service life. A 135-degree split point tip starts on contact without walking, delivering fast and accurate hole placement. The parabolic flute geometry clears chips quickly to reduce heat buildup and keep cuts moving. This bit is suited for electricians, plumbers, HVAC technicians, and general tradespeople who drill frequently through metal, wood, and PVC using portable drills.

The 48-89-2729 is intended for jobsite drilling applications across residential and light commercial work. The 3-flat Secure-Grip shank locks firmly in drill chucks to prevent slipping under load. A reduced shank diameter allows use in 3/8-inch chucks, making this bit compatible with a wide range of portable drills commonly found on trade jobsites. The black oxide coating provides lubricity during cutting and resists corrosion during storage and repeated use. It ships individually and is well suited to high-frequency drilling tasks where bit longevity matters.

Key Features

• 135-degree split point tip starts on contact and prevents walking for accurate hole placement
• Thicker web core resists side-load breakage and extends bit life compared to standard jobber bits
• Parabolic flute design clears chips rapidly to reduce heat and maintain cutting speed
• 3-flat Secure-Grip shank prevents slipping in drill chucks under heavy load
• Reduced shank diameter fits 3/8-inch chucks for compatibility with a wide range of portable drills
• Black oxide coating adds lubricity and corrosion resistance for extended storage life

Compatibility

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

Installation Notes

Installation of this drill bit does not require a licensed trade, but proper chuck seating is essential — confirm all three flats are engaged before applying load. Ensure the drill is powered off and the chuck is fully tightened before beginning any drilling operation. When drilling metal, use appropriate cutting fluid to reduce heat and prolong bit life. Follow applicable workplace safety standards for PPE including eye protection.

Technical Specifications

• Overall Length: 6 inches
• Package Weight: 0.11 pounds
• Package Width: 1.8 inches
• Package Length: 6.75 inches
• Package Height: 0.5 inches
• Point Angle: 135 degrees
• Coating: Black Oxide
• Flute Type: Parabolic
• Shank Type: 3-Flat Secure-Grip
• Sold As: Each

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-89-2729