Milwaukee 48-89-2775 x Black Oxide Aircraft-Length Drill Bit

Milwaukee 48-89-2775 7/16" x 12" Black Oxide Aircraft-Length Drill Bit

The Milwaukee 48-89-2775 is a 7/16" x 12" aircraft-length drill bit finished in black oxide, built for extended-reach drilling where a standard-length bit simply cannot reach. Aircraft-length bits get their name from their traditional use in aircraft manufacturing and maintenance, where technicians need to bore accurate holes deep into airframe structures, wing spars, and other thick assemblies. At 12" overall, this Milwaukee bit gives tradespeople the same long-reach capability for drilling through thick lumber, wall cavities, engine bays, HVAC chases, and other hard-to-access work areas. The 7/16" diameter delivers a consistent, repeatable hole size for applications that demand dimensional accuracy, and the black oxide finish helps the bit resist heat buildup and corrosion over repeated use. This combination of length, diameter, and finish makes the 48-89-2775 a dependable choice for professionals who need a longer, extended-reach bit that still delivers precise, repeatable results.

Key Features

• Trade Size: 7/16" diameter provides precise, consistent hole sizing for drilling tasks that require dimensional accuracy.
• Aircraft Length: 12" overall length gives the reach needed to drill through thick stock, wall cavities, engine compartments, and other deep or hard-to-access work areas where standard-length bits fall short.
• Black Oxide Finish: The black oxide coating creates a durable, low-friction surface that helps dissipate heat and resist corrosion, extending the working life of the bit compared to uncoated steel.
• Color: Finished in black for easy visual identification when sorting through a mixed set of bits.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Extended-Reach Drilling Applications in Deep or Confined Spaces
• Deep Hole Drilling Through Metal, Wood, or Plastic Stock
• Automotive, HVAC, and Mechanical Installation Work
• Wall Cavity and Framing Penetrations Requiring Extra Reach
• Access-Limited or Hard-to-Reach Job Sites

Why Milwaukee?

Milwaukee designs the 48-89-2775 aircraft-length drill bit with a black oxide finish to stand up to the demands of professional trade work, giving users the extended 12" reach and 7/16" precision needed to get tough drilling jobs done in a single pass. Whether working through thick framing, engine bays, or other hard-to-reach spaces, this bit is built to deliver dependable, repeatable performance that tradespeople can count on. Backed by Milwaukee's reputation for durable, trade-tested tooling, the 48-89-2775 is designed to hold up under the demands of daily use on the jobsite, making it a smart addition to any professional's drill bit set.