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 Jacobs Short Chuck
Model Number: 42-66-0400
The Milwaukee 42-66-0400 is a genuine OEM Jacobs Short Chuck for use in compatible Milwaukee drills and rotary tools. A Jacobs chuck is the classic three-jaw keyless or keyed drill chuck that grips round-shank drill bits and accessories by tightening three jaws concentrically around the shank — the "short" designation indicating a compact chuck body profile suited for applications where reduced chuck length is needed for better clearance or balanced handling. The chuck must maintain concentricity across its full capacity range for minimal runout and accurate hole placement. A worn, slipping, or damaged Jacobs chuck that can no longer grip round shanks securely or maintain concentricity requires replacement to restore accurate, secure bit retention.
Using a genuine Milwaukee OEM Jacobs short chuck ensures the correct mounting thread, jaw capacity, and body length for the tool it serves. 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 Jacobs short chuck for compatible Milwaukee drills and rotary tools
- Three-jaw design grips round-shank drill bits concentrically for accurate hole placement
- Short body profile provides better clearance and balance in compact applications
- Replacement restores secure, concentric bit retention when original chuck wears or slips
- Verify catalog number and serial number on Milwaukee's website before ordering
Specifications
- Type: Jacobs Short Chuck (Three-Jaw Drill Chuck)
- Application: Three-Jaw Round-Shank Bit Retention Chuck for Compatible Milwaukee Drills
- Compatibility: Always verify part compatibility using your tool's model and serial number before ordering
Includes
- (1) Milwaukee 42-66-0400 Jacobs Short Chuck
