Milwaukee 1/2″ THUNDERBOLT Black Oxide Drill Bit (6 PK)

REINFORCED THUNDERBOLT WEB FOR MAXIMUM TORSIONAL STRENGTH

The Milwaukee Thunderbolt series is engineered to solve the most common failure point in high-speed drilling: bit breakage caused by torsional stress and side-loading. By utilizing a significantly thicker corethe Thunderbolt webthis 1/2″ bit maintains structural integrity under heavy feed rates where standard bits often snap. The parabolic flute geometry provides a critical mechanical advantage, ensuring rapid chip evacuation to mitigate heat buildup, which is the primary cause of edge dulling in black oxide tooling. This bit is optimized for the high-torque demands of modern cordless drills, providing a professional-grade ROI through increased durability and faster hole-making cycles.

• / Thunderbolt Web: Reinforced core provides ultimate strength to protect against side-load breakage during heavy-duty applications.
• / 135 Split Point: Precision-ground tip starts on contact to prevent bit walking, ensuring accurate hole placement without the need for a center punch.
• / 3-Flat Secure-Grip Shank: Engineered with three flat sides to prevent the bit from spinning in the chuck, maximizing torque transfer and safety.
• / Parabolic Flute Form: Clears chips and debris rapidly to keep the bit cool, extending the life of the cutting edge in metal, wood, and plastic.
• / Black Oxide Coating: Provides essential lubricity and corrosion resistance for smoother drilling and long-term tool protection.

TECHNICAL SPECIFICATIONS

WHAT’S IN THE BOX

(1) 1/2″ Thunderbolt Black Oxide Drill Bit (48-89-2848)