9/64" SHOCKWAVE Impact Duty™ RED HELIX™ Titanium Drill Bit
9/64" SHOCKWAVE Impact Duty™ RED HELIX™ Titanium Drill Bit
48-89-4606
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$2.84
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$2.84
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The Milwaukee 48-89-4606 is a 9/64" SHOCKWAVE™ Impact Duty RED HELIX™ titanium drill bit, built for high-performance drilling in metal, wood, and plastic, especially when using impact drivers.
This is part of Milwaukee’s impact-rated drill bit lineup, which is different from the Thunderbolt bits you’ve been listing—these are specifically reinforced for higher torque and impact use.
Key Features
- Impact-rated design (SHOCKWAVE™) – built to handle impact drivers as well as drills
- RED HELIX™ variable flute – aggressive helix (35° → 15°) improves chip removal and reduces heat
- QUAD EDGE™ tip – four cutting edges for faster starts and smaller chips
- 135° split point tip – prevents walking and improves accuracy
- Titanium coating (TiN) – extends life up to ~3–5× vs black oxide bits
- 1/4" hex shank – quick-change compatible and ideal for impact drivers
Specs
- Size: 9/64 in (0.1406")
- Length: ~2.6 in
- Shank: 1/4" hex
- Material: High-speed steel (titanium-coated)
- Use: Metal, wood, plastics
- Pack size: Typically sold as single bit
Best Uses
- Pilot holes for small fasteners
- Sheet metal and thin steel drilling
- Electrical and HVAC work
- Wood and plastic drilling with impact drivers
- Jobsite use where quick bit changes matter
Bottom Line
The 48-89-4606 is a small, impact-rated titanium drill bit, built for speed, durability, and convenience with hex-shank tools. Compared to the 48-89-28xx Thunderbolt bits, this one is more advanced, longer-lasting, and optimized for impact drivers, not just standard drills.

9/64" SHOCKWAVE Impact Duty™ RED HELIX™ Titanium Drill Bit
$2.84