The Milwaukee Thunderbolt Black Oxide Drill Bit is a jobber-length drill bit engineered for extreme durability and long life in demanding applications. Whether you’re assembling furniture, fabricating metal, or drilling through wood and PVC, this bit delivers reliable performance with less effort than standard bits.
The Thunderbolt core is significantly thicker than standard drill bits, providing ultimate strength and protection against side-load breakage—a common cause of bit failure. The 135-degree split point tip delivers a precision start and prevents the bit from walking on curved surfaces, ensuring fast and accurate holes every time. A parabolic flute form clears chips efficiently during drilling, helping maintain performance throughout the bit’s life.
Features and Benefits
- Reinforced Thunderbolt Core: A thicker core resists breaking and protects against side-load damage during use.
- 135-Degree Split Point: Precision tip starts fast and prevents walking, delivering accurate holes with no slipping.
- Parabolic Flute Design: Clears chips fast for efficient drilling performance.
- Black Oxide Coating: Provides durability and corrosion resistance for extended bit life.
- 3-Flat Secure-Grip Shank: The 3/8-inch diameter shank holds firmly in drill chucks without slipping.
- Versatile Performance: Works effectively on wood, metal, PVC, and curved surfaces with portable and cordless drills.
Specifications
- Brand: Milwaukee
- Model: 48-89-2734
- Bit Diameter: 7/16 inch
- Overall Length: 5-1/2 inches
- Bit Type: Jobber length
- Shank Diameter: 3/8 inch
- Shank Style: 3-flat Secure-Grip
- Tip Angle: 135 degrees split point
- Flute Form: Parabolic
- Material: Black oxide
