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. Keyless Chuck
Model Number: 42-66-2608
The Milwaukee 42-66-2608 is a genuine OEM 1/2 in. Keyless Chuck for compatible Milwaukee drill/drivers. The chuck is the bit-holding assembly at the front of the drill that grips the shank of a drill bit or driver bit during use. This keyless design allows the user to open and close the chuck jaws by hand — without the need for a chuck key — while the ratcheting action clicks the jaws firmly into place to minimize bit slippage under torque. A worn, stiff, slipping, or seized chuck that can no longer hold bits securely or rotate smoothly requires replacement to restore reliable bit retention and full drill performance. Please note that the securing screw is sold separately — verify you have the correct screw before installation.
Using a genuine Milwaukee OEM keyless chuck ensures the correct thread mount, jaw geometry, and clamping capacity for the drill/driver it serves. Non-OEM chucks may not match the original thread specification or jaw tolerance, leading to imprecise bit seating, increased runout, or unreliable retention under load. Replacing with an OEM chuck restores the tool to its original specification for smooth, tool-free bit changes and secure bit retention during drilling and driving. Always verify your catalog number and serial number on Milwaukee's website before ordering to confirm compatibility with your specific unit.
Features
- Genuine Milwaukee OEM 1/2 in. keyless chuck for compatible Milwaukee drill/drivers
- Keyless design — opens and closes by hand with no chuck key required
- Ratcheting jaw action clicks jaws firmly into place for reduced bit slippage under torque
- Restores secure bit retention after chuck wear, stiffness, slipping, or seizure
- Note: securing screw is sold separately — verify correct screw before installation
- Verify catalog number and serial number on Milwaukee's website before ordering
Specifications
- Chuck Size: 1/2 in.
- Type: Keyless
Includes
- (1) Milwaukee 42-66-2608 1/2 in. Keyless Chuck
