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
Model Number: 42-66-2740
The Milwaukee 42-66-2740 is a genuine OEM 1/2 in. Keyless Service Chuck for the Milwaukee M18 FUEL Drill-Driver 2903-20. The chuck is the clamping device at the output of the drill that accepts drill bits, screwdriver bits, and other round or hex shank accessories — using a three-jaw keyless mechanism to grip the bit shank concentrically for low run-out drilling and driving. The service designation indicates this chuck is packaged as a complete service replacement unit with the chuck mounting screw included. The chuck must grip bits firmly through the full speed and torque range of the 2903-20 without slipping or releasing under load. A chuck with worn or damaged jaws that allows bits to slip, wobble, or cannot be tightened securely requires replacement to restore accurate, reliable bit retention.
Using a genuine Milwaukee OEM service chuck ensures the correct jaw range, spindle thread specification, and run-out tolerance for the M18 FUEL Drill-Driver 2903-20. Always verify your catalog number and serial number on Milwaukee's website before ordering to confirm this is the correct chuck for your specific unit.
Features
- Genuine Milwaukee OEM 1/2 in. keyless service chuck for the M18 FUEL Drill-Driver 2903-20
- Three-jaw keyless mechanism grips bits concentrically for accurate, low run-out drilling
- Grips firmly through the full speed and torque range without bit slip under load
- Replacement restores accurate bit retention when original chuck jaws are worn or damaged
- Verify catalog number and serial number on Milwaukee's website before ordering
Specifications
- Type: Service Chuck (Keyless, 1/2 in.)
- Compatible Tool: Milwaukee M18 FUEL Drill-Driver 2903-20
- Application: Drill Bit and Accessory Retention on M18 FUEL Drill-Driver Output Spindle
- Compatibility: Always verify part compatibility using your tool's model and serial number before ordering
Includes
- (1) Milwaukee 42-66-2740 1/2 in. Service Chuck (with chuck screw)
