Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukees website please click here:
Milwaukee 1/2 in. Service Chuck and Screw
Model Number: 42-66-2720
The Milwaukee 42-66-2720 is a genuine OEM 1/2 in. Service Chuck and Screw for the Milwaukee M18 FUEL Hammer-Drill 2904-20. The chuck is the three-jaw keyless clamping device at the output of the hammer-drill that accepts drill bits, screwdriver bits, and other accessories — gripping the bit shank concentrically for accurate, low run-out drilling and driving. This service kit includes the chuck mounting screw for a complete, ready-to-install chuck replacement. The chuck must grip bits firmly through the full speed and torque range of the 2904-20, including under the impact and vibration of hammer drilling, without slipping or releasing. A chuck with worn or damaged jaws requires replacement with this kit to restore accurate, reliable bit retention.
Using a genuine Milwaukee OEM service chuck and screw ensures the correct jaw range, spindle thread specification, and run-out tolerance for the M18 FUEL Hammer-Drill 2904-20. Always verify your catalog number and serial number on Milwaukee's website before ordering to confirm this is the correct kit for your specific unit.
Features
- Genuine Milwaukee OEM 1/2 in. service chuck and screw for the M18 FUEL Hammer-Drill 2904-20
- Three-jaw keyless mechanism grips bits concentrically for accurate, low run-out drilling
- Maintains secure bit retention under the impact and vibration of hammer drilling
- Chuck mounting screw included for a complete, ready-to-install replacement
- Verify catalog number and serial number on Milwaukee's website before ordering
Specifications
- Type: Service Chuck and Screw (1/2 in. Keyless)
- Compatible Tool: Milwaukee M18 FUEL Hammer-Drill 2904-20
- Application: Drill Bit and Accessory Retention on M18 FUEL Hammer-Drill Output Spindle
- Compatibility: Always verify part compatibility using your tool's model and serial number before ordering
Includes
- (1) Milwaukee 42-66-2720 1/2 in. Service Chuck and Screw
