48-89-2726 Thunderbolt Black Oxide Drill Bit, 5/16 In., 4-1/2 In. Oal

The Milwaukee Thunderbolt black oxide drill bit is a jobber-length bit engineered for extreme durability and long life when drilling in wood, metal, and PVC. The thicker Thunderbolt web core provides ultimate strength and protects against side-load breakage. Black oxide treatment reduces friction, keeps the bit sharp longer, and minimizes effort required when drilling through tough materials.

This bit solves common drilling problems: the 135-degree split point tip delivers precision starts and prevents walking for fast, accurate holes, even on curved surfaces. The specially designed parabolic flute form clears chips quickly for efficient drilling, while the 3-flat Secure-Grip shank holds the bit firmly in the drill chuck without slipping. Suitable for a range of materials and applications, this Milwaukee drill bit combines professional-grade quality with reliable performance.

Features and Benefits

• Thicker Thunderbolt Core: Resists breaking and protects against side-load breakage for extended bit life.
• Black Oxide Treatment: Reduces friction and helps the bit stay sharp longer while providing anti-corrosive protection.
• 135-Degree Split Point Tip: Delivers precision starts with no walking, ensuring fast and accurate holes.
• Parabolic Flute Design: Clears chips quickly for efficient, smooth drilling through all materials.
• 3-Flat Secure-Grip Shank: Holds firmly in the drill chuck to prevent slipping during use.
• Versatile Material Compatibility: Performs effectively on wood, metal, and PVC with reduced drilling effort.

Specifications

• Brand: Milwaukee
• Model: 48-89-2726
• Bit Type: Jobber length drill bit
• Diameter: 5/16 inch
• Overall Length: 4-1/2 inches
• Flute Style: Parabolic flute, 3-flute
• Tip Angle: 135 degrees split point
• Shank Style: 3-flat Secure-Grip
• Finish: Black oxide
• Materials for Use: Wood, metal, and PVC