Product Description
Milwaukee 3/4 in. Chuck Key with 3/8 in. Pilot
Model Number: 48-66-3160
The Milwaukee 48-66-3160 is a 3/4 in. Chuck Key with 3/8 in. pilot — the correct replacement chuck key for Milwaukee 3/4 in. capacity keyed chucks used on Milwaukee right-angle drills, hole hawg drills, and other Milwaukee tools equipped with a 3/4 in. keyed drill chuck. The chuck key is the essential operating tool for keyed chuck designs, used to tighten the chuck jaws onto the drill bit or cutter shank before drilling and to loosen the jaws for bit removal after the operation — without a chuck key, a keyed drill chuck cannot be properly tightened to the torque needed for secure bit retention during heavy-duty drilling or loosened easily after drilling under load. The 3/8 in. pilot diameter is the specific pilot size that engages the mating pilot hole in Milwaukee's 3/4 in. keyed chuck body to locate the chuck key gear precisely for tightening and loosening operations — using a chuck key with an incorrect pilot diameter for the specific chuck produces poor gear engagement, difficulty tightening, and potential damage to the chuck's key engagement holes from misaligned keyway contact.
Chuck keys are small tools that are easily misplaced, particularly on active jobsites where tools are moved frequently between locations — having a replacement chuck key readily available prevents the loss of a functional drill from a missing key on a project. The correct chuck key size must match both the chuck size and the pilot hole diameter of the specific chuck model being serviced. Always confirm that the replacement chuck key specification matches your specific Milwaukee chuck model number before ordering — chuck key sizes are not universal across different chuck sizes and manufacturers, and an incorrectly sized chuck key will not engage properly and may damage the chuck.
For complete chuck replacement rather than just the key, see Milwaukee OEM chuck replacement parts for Milwaukee right-angle drills and hole hawg drills in the appropriate chuck size and taper specification for your tool model.
Features
- Correct replacement chuck key for Milwaukee 3/4 in. capacity keyed drill chucks
- 3/8 in. pilot for precise engagement in Milwaukee 3/4 in. chuck key pilot holes
- Replacement for lost or damaged chuck key — prevents tool downtime from missing key
- Correct chuck key size and pilot are essential for proper chuck tightening and bit retention
- Confirm chuck model compatibility before ordering — chuck keys are not universal
Specifications
- Chuck Size: 3/4 in.
- Pilot Diameter: 3/8 in.
- Compatible Chucks: Milwaukee 3/4 in. Keyed Chucks (verify chuck model)
Includes
- (1) Milwaukee 48-66-3160 3/4 in. Chuck Key with 3/8 in. Pilot
