Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukee's website please click here:
Milwaukee 1/2 in. Keyed Chuck with Chuck Key
Model Number: 48-66-5185
The Milwaukee 48-66-5185 is a genuine OEM 1/2 in. Keyed Chuck with Chuck Key for compatible Milwaukee corded drills — a complete replacement chuck assembly that restores the drill's bit retention and concentricity when the original chuck develops runout from wear, loses jaw clamping force, develops slipping jaws, or is physically damaged. The chuck assembly includes the matching chuck key for the specific chuck's bevel gear and pilot hole specification, providing everything needed to complete the chuck replacement in a single OEM-sourced purchase without identifying the correct chuck key separately. The three-jaw chuck geometry must grip the bit shank uniformly for the zero-runout condition that produces accurate, clean holes — the OEM chuck ensures the correct spindle thread specification, jaw engagement geometry, and dimensional fit for the specific Milwaukee drill model.
Replacing only the chuck is the economical service approach when the chuck is the failed component — a drill body, motor, and gearbox in good condition can provide many years of additional service with a fresh OEM chuck rather than requiring complete tool replacement. Using a genuine Milwaukee OEM chuck with its matched key ensures the correct spindle thread, jaw geometry, and key specification for the specific Milwaukee drill model. Always verify your specific Milwaukee drill model number and serial number at milwaukeetool.com before ordering chuck assembly components, as chuck specifications vary between Milwaukee drill models and production revisions.
Features
- Genuine Milwaukee OEM chuck and matched key — correct spindle thread for drill model
- Complete assembly with key eliminates separate chuck key identification and ordering
- Restores zero-runout bit retention for accurate holes and reliable clamping
- Economical chuck-only replacement vs. complete tool replacement
- Verify Milwaukee drill model and serial number before ordering
Specifications
- Chuck Size: 1/2 in.
- Type: Keyed Chuck with Matching Chuck Key
- Compatible Tools: Milwaukee Corded Drills (verify model and serial number)
Includes
- (1) Milwaukee 1/2 in. Keyed Chuck
- (1) Matching Chuck Key
