Milwaukee 7/16" THUNDERBOLT® Black Oxide Drill Bit (6 PK)

ENGINEERED FOR RIGIDITY AND HIGH-SPEED CHIP EVACUATION

The Milwaukee Thunderbolt series represents a significant mechanical upgrade over standard jobber bits, specifically addressing the primary failure point in metal drilling: side-load breakage. By utilizing a reinforced Thunderbolt web, these bits feature a thicker core that provides the torsional rigidity required when drilling through heavy-gauge steel or curved surfaces where bit flex often leads to snapping. The parabolic flute geometry is a critical design choice for professional ROI, as it facilitates rapid chip removal to prevent heat buildup—the silent killer of high-speed steel cutting edges. For those operating portable drills, the 135° split point is essential for precision, eliminating the need for a center punch by biting into the material immediately upon contact.

• / Thunderbolt Web: Reinforced thicker core design maximizes strength and protects against breakage during aggressive drilling or side-loading.
• / 135° Split Point: Precision tip starts on contact to prevent walking, ensuring accurate hole placement on flat and curved surfaces without pre-drilling.
• / Parabolic Flute Form: Optimized geometry clears debris and chips faster to keep the bit cool and extend the life of the cutting edge.
• / 3-Flat Secure-Grip Shank: Reduced 3/8" shank features three flat sides to prevent the bit from spinning in the chuck under high-torque loads.
• / Black Oxide Coating: Provides superior lubricity and corrosion resistance, reducing friction and wear during repetitive drilling tasks.

WHAT'S IN THE BOX

(6) 7/16" Thunderbolt® Black Oxide Drill Bits (48-89-2844)