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 3/8 in. Chuck
Model Number: 42-66-0850
The Milwaukee 42-66-0850 is a genuine OEM 3/8 in. keyless Chuck for the 2415-20 M12 3/8 in. Right Angle Drill. The chuck is the clamp at the output of the drill that holds the drill or driver bit: as a keyless chuck, the operator grips and twists the chuck sleeve by hand to open and close the three jaws, and the ratcheting action clamps the bit tightly for reduced slippage, with no chuck key needed. It accepts bits up to the 3/8 in. capacity of this drill. Over time a chuck can lose its grip so bits slip or wobble, become stiff or hard to turn, or seize up entirely, at which point replacing it restores secure bit retention and smooth operation. Using the genuine Milwaukee OEM chuck ensures the correct 3/8 in. capacity, spindle thread and mount, and jaw mechanism for this drill, where an off-spec chuck may not thread onto the spindle or hold bits correctly.
This chuck is identified as the 3/8 Chuck, Figure 5, on the Milwaukee service parts list for the 2415-20 M12 3/8 in. Right Angle Drill, and it also serves the 2415-21 and 2415-059 versions of the drill. The chuck threads onto the drill's spindle and is held by a chuck screw inside the chuck, which is typically a left-hand (reverse) thread and is a separate part; back that screw out to remove the old chuck and reinstall it when fitting the new one. Because Milwaukee specifies service parts by serial number as well as catalog number, verify your catalog and serial number against the official Milwaukee service parts diagram before ordering, since running production changes can alter part compatibility within the same catalog number.
Features
- Genuine Milwaukee OEM 3/8 in. keyless chuck
- For the 2415-20 M12 3/8 in. Right Angle Drill
- Holds the drill or driver bit at the output of the drill
- Keyless: grip and twist the sleeve to open and close the jaws by hand
- Ratcheting jaws clamp the bit for reduced slippage
- Accepts bits up to the drill's 3/8 in. capacity
- Figure 5 on the service parts diagram
- Also fits the 2415-21 and 2415-059 versions
- Restores secure bit retention when the old chuck slips, is stiff, or has seized
- Correct capacity, spindle thread, and jaw mechanism for the drill
- Held by a chuck screw (typically left-hand thread), sold separately
- Sold individually
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 42-66-0850
- Official Description: 3/8 Chuck (keyless)
- Component Type: Keyless drill chuck
- Capacity: 3/8 in.
- Primary Fitment: Milwaukee 2415-20 M12 3/8 in. Right Angle Drill (also 2415-21, 2415-059)
- Also Referenced On: Verify additional applications using Milwaukee's online parts lookup
- Parts Diagram Position: Figure 5
- Quantity: Sold individually (1 chuck)
- Part Type: Genuine Milwaukee OEM Replacement Part
Includes
- (1) 3/8 in. Chuck
The chuck screw, the drill, and drill bits are NOT included and are sold separately. Always verify by serial number using Milwaukee's online parts lookup before ordering, since fitment can vary by production revision within the same catalog number.
