Milwaukee 48-89-2775 Black Oxide Aircraft Drill Bit

Product Description

The MILWAUKEE 48-89-2775 is a black oxide aircraft-length drill bit built for extra reach and deep drilling in metal, wood, and PVC. At 12 inches in overall length, it gives technicians and tradespeople the clearance needed for hard-to-access bore locations without sacrificing accuracy. The 135-degree split point tip starts on contact to eliminate walking and deliver clean, precise holes. A THUNDERBOLT web construction increases durability and supports faster drilling cycles. The black oxide coating reduces friction and resists corrosion, extending service life in demanding field conditions.

This bit is suited for applications where standard-length drill bits cannot reach — deep structural members, stacked sheet metal, electrical rough-in through framing, and plumbing penetrations through thick assemblies. The reduced shank diameter allows use in 3/8-inch chucks, making it compatible with a wide range of cordless and corded drills already on the job site. HVAC, electrical, and plumbing installers who regularly drill through multiple layers of material will find this bit practical for everyday rough-in work.

Key Features

• 135-degree split point tip starts on contact and prevents walking for accurate hole placement
• THUNDERBOLT web construction provides longer service life and faster drilling cycles
• 3-flat Secure-Grip shank locks into drill chuck to prevent bit rotation and slipping
• Reduced shank diameter fits standard 3/8-inch chucks
• Black oxide coating reduces friction and resists corrosion
• Extended 12-inch aircraft length reaches deep or obstructed drilling locations

Compatibility

Designed for use in 3/8-inch and larger drill chucks; suitable for drilling metal, wood, and PVC in residential and commercial trade applications.

Installation Notes

A licensed electrician, plumber, or HVAC installer typically uses aircraft-length bits for rough-in drilling through framing and structural assemblies. Secure the bit fully in the chuck before operation and confirm the 3-flat shank is properly seated. Disconnect power to the drill before changing bits. Use appropriate cutting fluid when drilling through metal to reduce heat buildup and extend bit life.

Technical Specifications

• Overall Length: 12 inches
• Point Angle: 135 degrees split point
• Shank Type: 3-flat Secure-Grip, reduced diameter
• Compatible Chuck Size: 3/8 inches and larger
• Coating: Black oxide
• Material Compatibility: Metal, wood, PVC
• End Type: Single end
• Weight: 0.46 pounds
• Unit of Measure: Each

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-89-2775