Milwaukee 5/8″ Thunderbolt Black Oxide Drill Bit 48-89-2839

REINFORCED WEB GEOMETRY FOR MAXIMUM SIDE-LOAD RESISTANCE

Engineered for the high-torque demands of professional drilling, the Milwaukee Thunderbolt Black Oxide bit features a specialized thicker core that significantly increases structural integrity. This reinforced web design is specifically built to withstand the side-load forces that typically cause standard bits to snap during deep-hole applications or when drilling through curved surfaces. The parabolic flute geometry optimizes chip evacuation, preventing heat buildup and friction to maintain a cool cutting edge, while the 135-degree split point ensures an immediate start without the need for a center punch.

• / Thunderbolt Web Design: Thicker core provides ultimate strength and protects against breakage during aggressive drilling.
• / 135 Split Point: Precision tip starts on contact to prevent walking and ensure accurate hole placement on flat or curved materials.
• / Parabolic Flute Geometry: Clears chips and debris rapidly to keep the bit cool and extend overall tool life.
• / 3-Flat Secure-Grip Shank: Eliminates bit slippage in the chuck for maximum torque transfer and control.
• / Black Oxide Coating: Provides superior lubricity and corrosion resistance for long-term durability in metal and wood.

TECHNICAL SPECIFICATIONS

WHAT’S IN THE BOX

(1) 5/8″ Thunderbolt Black Oxide Drill Bit (48-89-2839)