Milwaukee 23/32″ S&D Black Oxide Drill Bit

MAXIMUM RIGIDITY FOR LARGE-DIAMETER BORE HOLES

The Milwaukee Thunderbolt Silver & Deming drill bit is engineered for high-performance drilling in low to high tensile strength materials, including stainless steel and cast iron. Featuring a thicker web than standard twist bits, the Thunderbolt core provides superior structural integrity, allowing the bit to withstand heavy side-load pressure without snapping. The 135 split point tip ensures the bit starts on contact, eliminating walking on curved or flat surfaces, while the parabolic flute geometry rapidly ejects chips to prevent heat buildup. Designed with a 1/2″ reduced shank and 3-Flat Secure-Grip flats, this bit provides maximum torque transfer and prevents slippage in the chuck, making it an essential high-ROI accessory for heavy-duty metal fabrication.

• / Thunderbolt Core: Thicker web design provides increased strength and protects against breakage during deep-hole applications.
• / 135 Split Point: Precision tip starts on contact to prevent walking and delivers faster penetration in hard metals.
• / Parabolic Flute: Specialized geometry clears chips fast to reduce heat and extend the life of the cutting edge.
• / Secure-Grip Shank: 3-flat reduced 1/2″ shank prevents the bit from spinning in the chuck under high-torque loads.
• / Black Oxide Coating: Provides essential lubricity and resists corrosion for long-term jobsite durability.

TECHNICAL SPECIFICATIONS

WHAT’S IN THE BOX

(1) 23/32″ Thunderbolt Silver & Deming Drill Bit (48-89-2745)