Milwaukee 1/2″ Thunderbolt Black Oxide Drill Bit 48-89-2734

MAXIMUM CORE STRENGTH FOR HIGH-TORQUE DRILLING APPLICATIONS

The Milwaukee Thunderbolt Black Oxide series is engineered to solve the primary failure point of standard jobber bits: core snapping under side-load pressure. By utilizing a significantly thicker Thunderbolt web, this 1/2″ bit provides the structural rigidity required for aggressive drilling in metal, wood, and PVC. The parabolic flute geometry is optimized to eject chips rapidly, preventing heat buildup and extending the life of the cutting edge. Designed for the professional who demands precision without the need for center punching, the 135 split point ensures immediate engagement on curved or flat surfaces, while the 3-flat Secure-Grip shank eliminates the frustration of bit slippage during high-torque transitions.

• / Thunderbolt Web Design: Thicker core construction provides superior strength and protects against breakage during heavy side-loading.
• / 135 Split Point: Delivers a precision start on contact, preventing bit walking and ensuring accurate hole placement without a pilot hole.
• / Parabolic Flute Geometry: Clears chips and debris quickly to reduce friction and maintain cooler operating temperatures.
• / 3-Flat Secure-Grip Shank: Features a reduced 3/8″ diameter with flattened sides to lock firmly into the chuck and prevent spinning.
• / Black Oxide Coating: Provides essential lubricity and corrosion resistance for long-term durability in harsh jobsite environments.

TECHNICAL SPECIFICATIONS

WHAT’S IN THE BOX

(1) 1/2″ Thunderbolt Black Oxide Drill Bit (48-89-2734)