Easy
15-30 minutes
This is a genuine OEM supplied part which is specially designed for use with Milwaukee hammer drills. The part helps to secure the chuck. It provides an identical replacement for a missing or a faulty locking screw that was installed on a new unit. Please make sure to refer to the appropriate diagrams of your model for the correct location and application of this hardware. Keep in mind this high-quality screw is made of durable metal and is sold individually.
Chuck Retaining Screw 05-80-0430
OEM part for: Milwaukee
Part Number: 05-80-0430
$5.89
In Stock
Ships within 1 business day 
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Compatibility
This part will fit the following 11 machines
Milwaukee
5378-20 (SER 897A) 1/2" Electric Hammer Drill View Diagrams & Manuals
5378-20 (SER 897B) 1/2" Electric Hammer Drill View Diagrams & Manuals
5378-20 (SER 897C) 1/2" Electric Hammer Drill View Diagrams & Manuals
5378-20 (SER 897D) 1/2" Electric Hammer Drill View Diagrams & Manuals
5378-20 (SER 897E) Electric Drill View Diagrams & Manuals
5378-51 (SER 942A) 13mm Hammer-Drill View Diagrams & Manuals
5380-02 (SER 898A) Rotary Hammer View Diagrams & Manuals
5380-21 (SER B01A) 1/2 " Hammer Drill View Diagrams & Manuals
5381-20 (SER A67A) Hammer Drill View Diagrams & Manuals
5387-20 (SER A68A) Hammer Drill View Diagrams & Manuals
5387-22 1/2" Hammer Drill View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Drill Parts
- Electric Drill Parts
- Hammer Drill Parts
- Rotary Hammer Parts
This part replaces obsolete part #: 05-80-0470
Repair Videos ?
Articles:
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This article explains steps for how to remove threaded-on chucks and taper-fit drill chucks, as well as steps for removi...
September 18, 2009
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Broken gearboxes and sticky chuck screws can make removing a drill chuck difficult. This article explains the tricks you...
August 12, 2010
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Customer Part Reviews ?
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The screw worked well.
It enabled me to repair one of my drills
Guest -
March 7, 2024
Verified Purchase
Great part
Excelent service!
Guest -
August 18, 2022
Verified Purchase
Worked great
Right part and ez to find.
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July 27, 2019
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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.
Chuck retaining screw came loose and snapped.
Bryan - February 11, 2023
👍 1 of 1 people found this instruction helpful
Tool Type
Hammer Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set, 1/2\\
Parts Used
removed old screw broken stub with a scribe (left hand thread) re-screwed chuck on drive shaft and tightened using open end wrench on drive shaft flat and 1/2" box wrench on 1/2" allen key in chuck. opened chuck all the way and installed and installed chuck retaining screw (left hand thread) and tightened with screwdriver and open end wrench on drive shaft flats
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The spindle broke where the screw goes in from the chuck.
Russell - November 22, 2015
👍 2 of 3 people found this instruction helpful
Tool Type
Hammer Drill
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Hydraulic press
Complete the process of taking apart and make sure to notice how the parts fit. When putting back together, the opposite procedure will take place. Very easy repair...
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spindle thread stripped
William - February 5, 2022
Tool Type
Hammer Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Wrench Set
replaced spindle.
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Broken gear ring
Victor - January 19, 2022
Tool Type
Hammer Drill
Difficulty
Medium
Time
Less than 15 minutes
Tools Used
Screwdriver, Cut off wheel
First I had to cut off the old chuck with a cut off wheel on a 6” grinder. I cut just a little behind the broken gear ring. After removing the old chuck I could easily spin on the new chuck and tighten down the new retaining screw (inside the housing). Note: the chuck screws onto the shaft as a normal RH thread, but the screw is a LH thread. All in all, a very satisfying repair!
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Jammed chuck
Glen - December 20, 2021
Tool Type
Hammer Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Slip joint pliars
Removed the old chuck. However the internal screw was missing. The chuck was very tight and the flats on the shaft were small. Had to grind down an open end wrench to hold the shaft while I removed the chuck.
Threaded on new chuck and inserted the left handed screw
Threaded on new chuck and inserted the left handed screw
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The original screw broke off in the drill.
Donnie - August 26, 2021
Tool Type
Electric Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers
Parts Used
Removed the broken screw with pliers and replaced with the new screw with a screwdriver.
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Chuck was worn out.
Bruce - May 29, 2021
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Removed old screw. (Left hand thread)
Unscrewed old chuck.
Screwed new chuck on.
Replaced screw.
Unscrewed old chuck.
Screwed new chuck on.
Replaced screw.
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Chuck was stripped and I broke the old screw trying to remove the broken chuck
John - June 6, 2018
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Easy just screwed it in and tightened with flat blade screwdriver. Note reversed threads
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Lost chuck retaining screw
Mike - August 20, 2017
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Simply screwed it in. LH thread.
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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.
