Milwaukee 21/64" Thunderbolt Black Oxide Drill Bit 48-89-2822
ENGINEERED FOR EXTREME DURABILITY AND PRECISION DRILLING
The Milwaukee 48-89-2822 21/64" Thunderbolt® Black Oxide Drill Bit is designed to solve the most common failure point on the jobsite: bit breakage. By utilizing the proprietary Thunderbolt® web, which features a significantly thicker core than standard jobber bits, this bit provides the structural integrity needed to resist side-load snapping during aggressive drilling. The parabolic flute design is a critical mechanical advantage, facilitating rapid chip evacuation to prevent heat buildup—the primary enemy of bit longevity. Whether you are drilling through stainless steel, wood, or curved surfaces, the 135° split point ensures an immediate start without the need for a center punch, maintaining high-precision hole placement every time.
- / Thunderbolt® Web Design: Thicker core provides ultimate strength and protects against side-load breakage during heavy-duty applications.
- / 135° Split Point Tip: Starts on contact to prevent walking, ensuring fast and accurate hole placement without the need for a pilot hole.
- / Parabolic Flute Geometry: Clears chips and debris faster to keep the bit cool and extend the sharp life of the cutting edge.
- / 3-Flat Secure-Grip Shank: Prevents the bit from slipping in the chuck under high torque, maximizing power transfer and safety.
- / Black Oxide Coating: Provides superior lubricity and corrosion resistance for smoother drilling in tough jobsite materials.
TECHNICAL SPECIFICATIONS
| Diameter | 21/64" |
| Decimal Equivalent | 0.3281 |
| Overall Length | 4-5/8" |
| Flute Length | 3-5/16" |
| Shank Type | 3-Flat Secure-Grip (Reduced to 3/8") |
| Coating | Black Oxide |
| Point Angle | 135° Split Point |
| Application | Metal, Wood, Plastic |
WHAT'S IN THE BOX
(1) 21/64" Thunderbolt Black Oxide Drill Bit (48-89-2822)
Original: $1.29
-65%$1.29
$0.45Product Information
Product Information
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Description
ENGINEERED FOR EXTREME DURABILITY AND PRECISION DRILLING
The Milwaukee 48-89-2822 21/64" Thunderbolt® Black Oxide Drill Bit is designed to solve the most common failure point on the jobsite: bit breakage. By utilizing the proprietary Thunderbolt® web, which features a significantly thicker core than standard jobber bits, this bit provides the structural integrity needed to resist side-load snapping during aggressive drilling. The parabolic flute design is a critical mechanical advantage, facilitating rapid chip evacuation to prevent heat buildup—the primary enemy of bit longevity. Whether you are drilling through stainless steel, wood, or curved surfaces, the 135° split point ensures an immediate start without the need for a center punch, maintaining high-precision hole placement every time.
- / Thunderbolt® Web Design: Thicker core provides ultimate strength and protects against side-load breakage during heavy-duty applications.
- / 135° Split Point Tip: Starts on contact to prevent walking, ensuring fast and accurate hole placement without the need for a pilot hole.
- / Parabolic Flute Geometry: Clears chips and debris faster to keep the bit cool and extend the sharp life of the cutting edge.
- / 3-Flat Secure-Grip Shank: Prevents the bit from slipping in the chuck under high torque, maximizing power transfer and safety.
- / Black Oxide Coating: Provides superior lubricity and corrosion resistance for smoother drilling in tough jobsite materials.
TECHNICAL SPECIFICATIONS
| Diameter | 21/64" |
| Decimal Equivalent | 0.3281 |
| Overall Length | 4-5/8" |
| Flute Length | 3-5/16" |
| Shank Type | 3-Flat Secure-Grip (Reduced to 3/8") |
| Coating | Black Oxide |
| Point Angle | 135° Split Point |
| Application | Metal, Wood, Plastic |
WHAT'S IN THE BOX
(1) 21/64" Thunderbolt Black Oxide Drill Bit (48-89-2822)
