Milwaukee 48-89-2770 Black Oxide Aircraft Drill Bit

Product Description

The MILWAUKEE 48-89-2770 is a black oxide aircraft-length drill bit designed for extra reach and deep drilling in metal, wood, and PVC. At 12 inches in length, it gives technicians and tradespeople the extended reach needed for tight or deep access points without requiring extensions. The 135-degree split point tip starts on contact for a precise, no-walk entry hole. The black oxide coating reduces friction and resists corrosion, extending service life in demanding jobsite conditions. A 3-flat shank design locks the bit firmly in the chuck, preventing rotation slippage during high-torque drilling. Sold individually.

Aircraft-length drill bits like the 48-89-2770 are used in applications where standard-length bits cannot reach the work surface. Common scenarios include drilling through structural framing, electrical rough-in work, plumbing penetrations, HVAC ductwork framing, and PVC pipe installations. The reduced shank diameter allows this 12-inch bit to seat in 3/8-inch chucks, making it compatible with a wide range of standard corded and cordless drills already on the truck.

Key Features

• 135-degree split point tip starts on contact and prevents walking for accurate hole placement
• THUNDERBOLT web construction provides increased strength and longer bit life
• 3-flat Secure-Grip shank prevents slipping in the drill chuck during high-torque operation
• 12-inch aircraft length provides extended reach for deep or obstructed drilling applications
• Reduced shank diameter fits standard 3/8-inch chucks
• Black oxide coating reduces friction and resists corrosion

Compatibility

Designed as an aircraft-length replacement drill bit compatible with standard 3/8-inch keyed and keyless drill chucks for use in metal, wood, and PVC drilling applications.

Installation Notes

This bit is installed by trade professionals including electricians, plumbers, and HVAC technicians during rough-in drilling work. Secure the 3-flat shank fully into the chuck before operating and verify chuck tightness before drilling. Use appropriate eye protection and secure the workpiece before starting. Inspect the bit for wear or damage before each use and retire it if the cutting edges are chipped or the shank shows deformation.

Technical Specifications

• Length: 12 inches
• Point Type: 135-degree split point
• Shank Type: 3-flat reduced shank
• Coating: Black oxide
• Compatible Materials: Metal, wood, PVC
• End Type: Single end
• Weight: 0.07 pounds
• UOM: Each

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-89-2770