3/16" SHOCKWAVE Impact Duty™ RED HELIX™ Titanium Drill Bit

The Milwaukee 48-89-4609 is a 3/16" SHOCKWAVE™ Impact Duty RED HELIX™ titanium drill bit, built for high-performance drilling with impact drivers or drills.

This is the next size up from the 4606 / 4607 you listed—same design, just a larger diameter for bigger pilot holes and fasteners.

Key Features

• Impact-rated (SHOCKWAVE™) – designed to handle high torque from impact drivers
• RED HELIX™ variable flute – improves chip removal and reduces heat buildup
• QUAD EDGE™ tip – faster starts with smaller chips for smoother drilling
• 135° split point tip – prevents walking and improves accuracy
• Titanium coating (TiN) – up to ~3× longer life vs black oxide bits
• 1/4" hex shank – quick-change compatible for impact drivers

Specs

• Size: 3/16 in (0.1875")
• Length: ~3 in overall
• Flute length: ~1.1 in
• Shank: 1/4" hex
• Material: Titanium-coated high-speed steel
• Use: Metal, wood, plastics

Best Uses

• Pilot holes for #12–1/4" fasteners (typical range)
• Sheet metal and light steel drilling
• Wood framing and general construction
• Electrical / HVAC installs
• Fast drilling with impact drivers

Bottom Line

The 48-89-4609 is basically the impact-driver version of a 3/16" drill bit:

• Stronger than standard bits under torque
• Faster chip removal (runs cooler)
• Longer life than black oxide
• Built for quick-change hex tools