Milwaukee 1/2" THUNDERBOLT® Black Oxide Drill Bit

ENGINEERED FOR HIGH-TORQUE DRILLING AND MAXIMUM CORE STRENGTH

The Milwaukee Thunderbolt series represents a significant mechanical upgrade over standard jobber bits, specifically engineered to withstand the rigors of high-torque portable drilling. By utilizing a thicker core than conventional designs, the Thunderbolt web provides superior structural integrity, effectively neutralizing the side-load forces that typically cause bit breakage during deep-hole applications or when drilling through uneven surfaces. This reinforced geometry, paired with a 135-degree split point, ensures that the bit bites into the material immediately upon contact, preventing the walking that often mars workpieces in metal fabrication or structural framing.

• / Thunderbolt® Web Design: Thicker core diameter provides industrial-grade strength and protects against breakage under heavy side-load pressure.
• / 135° Split Point: Precision-ground tip starts on contact to eliminate bit walking and ensure accurate hole placement without a center punch.
• / Secure-Grip™ 3-Flat Shank: Three machined flats on the shank prevent the bit from spinning in the chuck, maximizing torque transfer in high-demand applications.
• / Parabolic Flute Geometry: Optimized flute shape rapidly ejects chips and debris to reduce heat buildup and extend the service life of the cutting edge.
• / Black Oxide Coating: Provides essential lubricity and corrosion resistance, ensuring the bit remains productive in harsh jobsite environments.

WHAT'S IN THE BOX

(1) 1/2" Thunderbolt Black Oxide Drill Bit (48-89-2738)