Milwaukee 31/64" THUNDERBOLT® Black Oxide Drill Bit (6 PK)

REINFORCED CORE TECHNOLOGY FOR HIGH-TORQUE DRILLING APPLICATIONS

Drilling through thick gauge metal or hardwoods requires more than just a sharp edge; it requires a bit that can handle the torsional stress of a modern high-output drill. The Milwaukee 48-89-2847 Thunderbolt bit features a reinforced web that is significantly thicker than standard jobber bits, providing the rigidity needed to resist snapping under side-load. The 135-degree split point is a critical feature for professionals, ensuring the bit bites into the material immediately without walking—even on curved or uneven surfaces. Combined with a parabolic flute that ejects chips at high speed, this bit maintains a lower operating temperature, preserving the cutting edge for hundreds of additional holes and maximizing jobsite ROI.

• / Thunderbolt Web Design: Thicker core increases torsional strength to protect against breakage during aggressive side-loading.
• / 135° Split Point: Precision tip starts on contact to prevent walking and ensure accurate hole placement without center punching.
• / Parabolic Flute Geometry: Rapidly clears chips and debris to reduce friction and keep the bit cool during continuous drilling.
• / 3-Flat Secure-Grip Shank: Reduced 3/8-inch shank with three flat sides prevents the bit from slipping in the chuck under high torque.
• / Black Oxide Coating: Provides superior lubricity and corrosion resistance for extended tool life in metal, wood, and plastic.

WHAT'S IN THE BOX

(6) 31/64" Thunderbolt® Black Oxide Drill Bits (48-89-2847)