Easy
Less than 15 minutes
This part is an OEM from the Milwaukee manufacturer. The keyless chuck is constructed of high-quality metal with a plastic grip. The chuck is fitted onto the gearbox assembly, and is designed to hold the bits and tools necessary for projects. This item is sold individually. It is recommended to refer to the specific manual for further instructions.
Keyless 1/2 42-66-0023
OEM part for: Milwaukee
Part Number: 42-66-0023
$36.05
In Stock
Ships within 1 business day 
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Frequently Purchased Together ?
Compatibility
This part will fit the following 4 machines
Milwaukee
2607-20 M18 1/2" Hammer Driver View Diagrams & Manuals
2607-22 M18 1/2" Hammer Driver View Diagrams & Manuals
2607-22CT M18 1/2" Hammer Driver View Diagrams & Manuals
2702-20 M18 1/2" Compact Brushless Hammer Drill/Driver View Diagrams & Manuals
This item works with the following types of products:
- Drill Parts
- Hammer Drill Parts
This part replaces obsolete part #: 42-66-2701, 42-66-2607, 42-66-2702
Customer Part Reviews ?
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Great
You guys rock l enjoy doing business with you
Guest -
January 14, 2022
Verified Purchase
The right part.
There was a lengthy delay due to manufacturer back order. I knew that when I ordered it. When the part was available eReplacement got it right out.
Guest -
August 31, 2021
Verified Purchase
Perfect part, Easy repair
Arrived quickly and was easy to replace
Guest -
January 4, 2021
Verified Purchase
Easy repair
I use it for ice fishing
Guest -
December 27, 2020
Verified Purchase
Milwaukee part
Get product, fit perfectly! Super fast shipping.
Guest -
September 2, 2020
Verified Purchase
Great parat exact
Works great A*
Guest -
February 12, 2020
Verified Purchase
Chuck replacement made easy
The chuck arrived on time, fit perfectly, easy to replace with online video providing the how to.....saved $40 compared to what the Milwaukee shop wanted to charge for the repair.
Guest -
December 3, 2019
Verified Purchase
Good part
Delivery time was great, chuck went on good and works good, thanks.
Joseph -
November 27, 2019
Verified Purchase
Milwaukee 1/2" keyless Chuck replacement
Good product with solid build at a good price.
Guest -
August 16, 2019
Verified Purchase
Had to reorder the screw do to getting the wrong one the 1st time.
Was a easy repair the oem screw had broken off and I decided to replace the chuck also.
Joe -
June 10, 2019
Verified Purchase
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t days ago
Verified Purchase
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Worn out chuck
Keith - May 9, 2017
👍 2 of 2 people found this instruction helpful
Tool Type
Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Hammer,allen wrench
Parts Used
Removed the chuck screw from the center of the chuck LH threads.
Inserted the largest allen wrench that would fit into the chuck. Insert the short end in the chuck. Tighten the chuck on the allen wrench. Lay the drill on its side and hit the allen wrench with a hammer to release it from the spindle. Then screw on the chuck hand tight and replace the chuck screw.
Inserted the largest allen wrench that would fit into the chuck. Insert the short end in the chuck. Tighten the chuck on the allen wrench. Lay the drill on its side and hit the allen wrench with a hammer to release it from the spindle. Then screw on the chuck hand tight and replace the chuck screw.
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Jaws of drill chuck out of round. Drills not drilling round hole.
Steven - January 14, 2022
Tool Type
Hammer Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
1.Retracted drill jaws.
2. Removed left hand threaded screw holding chuck with screwdriver..
3. Tightened chuck onto large allen wrench.
4. Tapped allen wrench with hammer to loosen the chuck from drill..
5.Replaced with new chuck.
2. Removed left hand threaded screw holding chuck with screwdriver..
3. Tightened chuck onto large allen wrench.
4. Tapped allen wrench with hammer to loosen the chuck from drill..
5.Replaced with new chuck.
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Chuck was bad
Michael - August 6, 2020
Tool Type
Cordless Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Allen Wrench
Parts Used
1 removed chuck screw left handed threads
2 chucked Allen wrench in chuck and broke chuck free and removed
3. Threaded new chuck on drill rechecked Allen wrench and tightens chuck on drill.
4. Installed new chuck screw.
2 chucked Allen wrench in chuck and broke chuck free and removed
3. Threaded new chuck on drill rechecked Allen wrench and tightens chuck on drill.
4. Installed new chuck screw.
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old chuck would not hold
THOMAS - December 31, 2019
Tool Type
Hammer Drill
Difficulty
Medium
Time
Less than 15 minutes
Tools Used
Screwdriver, Allan wrench
Parts Used
removed old chuck and replaced with new chuck
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Chuck worn out
Steven - September 12, 2019
Tool Type
Cordless Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Unscrewed the Phillips screw in the center of the chuck then replaced it with new screw and new chuck easy thanks
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Drill chuck froze up and would not open/close by hand
Rick - January 12, 2019
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers, Allen Wrench, Impact driver, Blue Locktite
Parts Used
1. Opened the old chuck completely with a set of pliers by securing the drill in a vise.
2.Note: Using the pliers pretty much destroys the old chuck.
3. Once open; using an impact driver and PHILLIPS screwdriver tip, I broke the screw loose inside the chuck. (left hand thread, so set your impact driver to tighten in order to loosen). Removed screw.
4.Using the pliers, I was able to stick a large Allen Wrench in the chuck and tightened down on it. I then loosened the chuck spinning counter-clockwise and removed it from the drill.
5. I used the same Allen Wrench in the new chuck and tightened it on the drill.
6. I put a drop of locktite on the screw and used the impact driver to re-install, changing the driver direction to loosen in order to tighten the screw.
Done!
PS-Great website, easy to find parts for just about anything around the house you need to repair, definitely one of my "go-to" places!
2.Note: Using the pliers pretty much destroys the old chuck.
3. Once open; using an impact driver and PHILLIPS screwdriver tip, I broke the screw loose inside the chuck. (left hand thread, so set your impact driver to tighten in order to loosen). Removed screw.
4.Using the pliers, I was able to stick a large Allen Wrench in the chuck and tightened down on it. I then loosened the chuck spinning counter-clockwise and removed it from the drill.
5. I used the same Allen Wrench in the new chuck and tightened it on the drill.
6. I put a drop of locktite on the screw and used the impact driver to re-install, changing the driver direction to loosen in order to tighten the screw.
Done!
PS-Great website, easy to find parts for just about anything around the house you need to repair, definitely one of my "go-to" places!
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The chuck locked up
Brett - September 15, 2017
👍 1 of 2 people found this instruction helpful
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Removed the old chuck and replaced it with the new one. The video on the website showed me a trick to "pop" the old one loose. Saved hundreds of dollars. I've used Ereplacementparts.com before and will continue to use them. I run a shop that has about a dozen employees and we are pretty tough on tools.
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
