Milwaukee 13/64" Thunderbolt Black Oxide Drill Bit 48-89-2723

REINFORCED CORE GEOMETRY FOR MAXIMUM SIDE-LOAD RESISTANCE

When high-torque portable drilling meets demanding jobsite materials, standard bits often fail at the web. The Milwaukee Thunderbolt design addresses this with a significantly thicker core, providing the structural integrity needed to resist breakage during side-loading or aggressive drilling angles. The 135-degree split point eliminates the need for center punching by engaging the material immediately, preventing walking and ensuring precision in every hole. Furthermore, the parabolic flute geometry ensures that chips are evacuated rapidly to prevent heat buildup—the primary killer of drill bit longevity—while the 3-Flat Secure-Grip shank ensures the bit remains locked in the chuck under heavy load.

• / Thunderbolt Web: Thicker core construction provides ultimate strength and protects against breakage from side-load pressure.
• / 135° Split Point: Precision-ground tip starts on contact to prevent bit walking for faster, more accurate holes.
• / Parabolic Flute: Specially designed form clears chips and debris fast to keep the bit cool and extend cutting life.
• / 3-Flat Secure-Grip Shank: Prevents the bit from slipping in the drill chuck, maximizing torque transfer.
• / Black Oxide Coating: Provides essential lubricity and resists corrosion for long-term professional use.

WHAT'S IN THE BOX

(1) 13/64" Thunderbolt Black Oxide Drill Bit (48-89-2723)