
Milwaukee 29/64" Thunderbolt Black Oxide Drill Bit 48-89-2845
REINFORCED CORE TECHNOLOGY FOR MAXIMUM DRILLING UPTIME
Engineered to withstand the high-torque demands of professional-grade portable drills, the Thunderbolt Black Oxide series redefines jobber length durability. Unlike standard bits that prone to snapping under lateral pressure, the integrated Thunderbolt web features a significantly thicker core, providing the structural integrity needed to resist side-load breakage. This mechanical advantage, paired with a specialized parabolic flute, ensures that heat is managed through rapid chip ejection, maintaining the bit's temper and extending service life across metal, wood, and plastic applications.
- / Thunderbolt® Web Design: Thicker core architecture provides ultimate strength and protects against breakage during aggressive drilling or side-loading.
- / 135° Split Point Tip: Precision-ground tip starts on contact to prevent bit walking, ensuring accurate hole placement without the need for a center punch.
- / Parabolic Flute Geometry: Optimized flute form clears chips and debris at an accelerated rate to keep the cutting edge cool and efficient.
- / 3-Flat Secure-Grip™ Shank: Machined flats provide a rock-solid connection in the drill chuck, eliminating bit slippage during high-torque operations.
- / Corrosion Resistant Coating: Black oxide finish provides essential lubricity to reduce friction while protecting the bit from rust and jobsite wear.
TECHNICAL SPECIFICATIONS
| Diameter | 29/64" |
| Decimal Equivalent | 0.4531 |
| Shank Size | 3/8" Reduced |
| Shank Style | 3-Flat Secure-Grip™ |
| Point Angle | 135° Split Point |
| Flute Type | Parabolic |
| Overall Length | 5-5/8" |
| Coating | Black Oxide |
WHAT'S IN THE BOX
(1) 29/64" Thunderbolt® Black Oxide Drill Bit (48-89-2845)
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
REINFORCED CORE TECHNOLOGY FOR MAXIMUM DRILLING UPTIME
Engineered to withstand the high-torque demands of professional-grade portable drills, the Thunderbolt Black Oxide series redefines jobber length durability. Unlike standard bits that prone to snapping under lateral pressure, the integrated Thunderbolt web features a significantly thicker core, providing the structural integrity needed to resist side-load breakage. This mechanical advantage, paired with a specialized parabolic flute, ensures that heat is managed through rapid chip ejection, maintaining the bit's temper and extending service life across metal, wood, and plastic applications.
- / Thunderbolt® Web Design: Thicker core architecture provides ultimate strength and protects against breakage during aggressive drilling or side-loading.
- / 135° Split Point Tip: Precision-ground tip starts on contact to prevent bit walking, ensuring accurate hole placement without the need for a center punch.
- / Parabolic Flute Geometry: Optimized flute form clears chips and debris at an accelerated rate to keep the cutting edge cool and efficient.
- / 3-Flat Secure-Grip™ Shank: Machined flats provide a rock-solid connection in the drill chuck, eliminating bit slippage during high-torque operations.
- / Corrosion Resistant Coating: Black oxide finish provides essential lubricity to reduce friction while protecting the bit from rust and jobsite wear.
TECHNICAL SPECIFICATIONS
| Diameter | 29/64" |
| Decimal Equivalent | 0.4531 |
| Shank Size | 3/8" Reduced |
| Shank Style | 3-Flat Secure-Grip™ |
| Point Angle | 135° Split Point |
| Flute Type | Parabolic |
| Overall Length | 5-5/8" |
| Coating | Black Oxide |
WHAT'S IN THE BOX
(1) 29/64" Thunderbolt® Black Oxide Drill Bit (48-89-2845)













