Milwaukee
Milwaukee Tool Chuck Key
- SKU:
- MLW48-66-3200
- Availability:
- Usually Ships Same Day
- Weight:
- 0.10 LBS
Description

DUTY®
Replacement
Chuck Key
A replacement chuck key with a verified fit for drill 0124-1, starting serial 603-3000.
Product Overview
The key fits selected keyed chucks; verify the installed chuck before choosing a replacement.
Use holder 48-66-4080 for cord-set storage. Keep the key clear of the chuck before starting.
- Verified drill0124-1, serial 603-3000.
- Host chuck48-66-0104, 1/4 in.
- Storage optionMatching cord-set key holder.
- Key designManual T-handle adjustment.
Technical Specifications
- Verified drill
- 0124-1
- Serial scope
- 603-3000
- Host chuck
- 48-66-0104
- Chuck capacity
- 1/4 in
- Storage holder
- 48-66-4080
- Handle form
- T-handle
Choose the Correct Fit
Confirm drill 0124-1, serial scope 603-3000, and the installed chuck 48-66-0104. A replacement chuck may require a different key.
Disconnect the drill from power before changing the bit. Seat the correct key fully and adjust the jaws according to the drill instructions.
Installation & Care
Remove the key from the chuck before reconnecting power. Use the specified 48-66-4080 holder to keep it with the corded tool.
Inspect the key teeth and chuck engagement for damage. Replace a worn key rather than forcing it or substituting an incorrect size.
Small Details. Big Jobsite Energy.
Get set. Stay focused. Make your next move count.
THE NEXT JOB.
Ask Willy:
Send Willy the drill model, serial prefix and installed chuck number to confirm the replacement key.
Important Product Questions
Will chuck capacity alone identify the correct key?
No. Match the installed chuck part number and the manufacturer’s key cross-reference. Chucks with the same capacity can use different keys.
Does a changed chuck affect which key I need?
Yes. The verified 0124-1 service arrangement uses chuck 48-66-0104. If that chuck has been replaced, identify the replacement before ordering.
How should I keep the key with the drill?
Use the specified 48-66-4080 key holder for cord-set storage. Always remove the key from the chuck before starting the drill.