Milwaukee 29/64" Thunderbolt Black Oxide Drill Bit 48-89-2845

REINFORCED CORE TECHNOLOGY FOR MAXIMUM DRILLING UPTIME

Engineered to withstand the high-torque demands of professional-grade portable drills, the Thunderbolt Black Oxide series redefines jobber length durability. Unlike standard bits that prone to snapping under lateral pressure, the integrated Thunderbolt web features a significantly thicker core, providing the structural integrity needed to resist side-load breakage. This mechanical advantage, paired with a specialized parabolic flute, ensures that heat is managed through rapid chip ejection, maintaining the bit's temper and extending service life across metal, wood, and plastic applications.

• / Thunderbolt® Web Design: Thicker core architecture provides ultimate strength and protects against breakage during aggressive drilling or side-loading.
• / 135° Split Point Tip: Precision-ground tip starts on contact to prevent bit walking, ensuring accurate hole placement without the need for a center punch.
• / Parabolic Flute Geometry: Optimized flute form clears chips and debris at an accelerated rate to keep the cutting edge cool and efficient.
• / 3-Flat Secure-Grip™ Shank: Machined flats provide a rock-solid connection in the drill chuck, eliminating bit slippage during high-torque operations.
• / Corrosion Resistant Coating: Black oxide finish provides essential lubricity to reduce friction while protecting the bit from rust and jobsite wear.

TECHNICAL SPECIFICATIONS

Diameter	29/64"
Decimal Equivalent	0.4531
Shank Size	3/8" Reduced
Shank Style	3-Flat Secure-Grip™
Point Angle	135° Split Point
Flute Type	Parabolic
Overall Length	5-5/8"
Coating	Black Oxide

WHAT'S IN THE BOX

(1) 29/64" Thunderbolt® Black Oxide Drill Bit (48-89-2845)