Milwaukee 15/64" Thunderbolt Black Oxide Drill Bit 48-89-2730

MAXIMIZE DRILLING UPTIME WITH THICKER CORE GEOMETRY

When pushing a drill bit through thick metal or abrasive materials, the primary failure point is often side-load breakage. The Milwaukee Thunderbolt® series addresses this with a significantly thicker web than standard jobber bits, providing the structural rigidity needed for high-torque applications and preventing the snapping that plagues thinner designs. This mechanical reinforcement ensures more energy is transferred directly to the cutting edge, increasing efficiency and professional ROI. The parabolic flute geometry is a critical advantage, ejecting chips rapidly to minimize heat buildup—the silent killer of drill bit longevity. For professionals relying on high-performance cordless drills, the 3-Flat Secure-Grip™ shank is an essential feature, locking into the chuck to eliminate the slipping that ruins both the bit and the work surface.

• / Thunderbolt® Web: Engineered with a thicker core to withstand extreme side-load pressure and prevent breakage in demanding jobsite conditions.
• / 135° Split Point: Delivers immediate engagement on contact, eliminating bit walking and ensuring precision hole placement without a center punch.
• / Parabolic Flute Design: Optimized geometry clears chips and debris faster, reducing friction and heat for extended tool life and faster drilling speeds.
• / 3-Flat Secure-Grip™ Shank: Provides three flat contact points to ensure the bit remains locked in the chuck under high-torque loads, preventing bit spin.
• / Black Oxide Coating: Offers superior lubricity and corrosion resistance, essential for maintaining performance when drilling through metal, wood, and PVC.

WHAT'S IN THE BOX

(1) 15/64" Thunderbolt® Black Oxide Drill Bit (48-89-2730)