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Replacement Lock Cylinder for UWS Toolboxes w Square Paddle Handles - CH503

Replacement Lock Cylinder for UWS Toolboxes w Square Paddle Handles - CH503

Our Price: $11.95
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Shipping Weight: 0.11 lbs
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UWS Accessories and Parts - UWSLOCKCH503

  • ATV-UTV Tool Box
  • Trailer Tongue Box
  • Trailer Tool Box
  • Truck Tool Box
  • Underbody Tool Box
  • Lock Parts
  • Lock Cores and Cylinders
  • UWS

  • Replace a damaged lock cylinder on your UWS toolbox with square paddle handles
    • Will not work with drawer slide, dog boxes, T-handles or push-button locks
  • Uses key # CH503
  • Includes 1 lock cylinder and 2 keys

003-CH503CYLNDR Replacement Lock Cylinder for UWS Toolboxes w Square Paddle Handles - CH503


California residents: click here

Customer Satisfaction Score:

Customer Reviews

Replacement Lock Cylinder for UWS Toolboxes w Square Paddle Handles - CH503 - UWSLOCKCH503

Average Customer Rating:  4.8 out of 5 stars   (83 Customer Reviews)


Nut on cylinder was slightly cross-threaded, but bought this for the keys. Not overly concerned.


This lock was exactly what I needed to replace one in a used truck box. The fit was spot on based on the information I input. Works perfectly and locks up tight with no wiggle. If needed I would definitely come back to etrailer.


Product worked perfect very easy to install. Definitely worth buying if u need to change locks on your toolbox


Awesome service fast shipping


Awesome product


Needed a key and a lock. Looked around and "" had just the product I needed at a great price. Ordered it on a Friday evening and it was delivered on Monday!!!!! Talk about outstanding Customer Service! The keys work perfect in the existing lock and the replacement lock was easy to replace. Now I can secure my tool box and use the paddle handle to open it from either side. Thank you



After a year of constant use and exposure to the elements the locks are still working like new!!!!


Bought a used tool box for my truck, and of course there was no key available. I knew the brand of the tool box, so I did a google search. I ended up finding etrailer corporation, and the amount/availability of parts was excellent. Typed in the code on the existing lock and quickly found the replacement. Install was a breeze and the lock works perfect.

Will definitely use etrailer again, I highly recommend this company.


Ordered replacement lock for tool box. Installed it and it works great.


Product was great, and the customer service was even better, very easy to talk to and helpful. The only thing I would say is that the lock cylinder I received was a little difficult to slide the key in and out and turn, but once I put a little graphite lubricant in it it worked like a charm!


Fit our Delta toolbox perfectly. We had searched for one for quite some time & nothing would work till we found this one.

Robert B.


Has worked great


To Etrailer corporation
Thank you
so much for the prompt delivery of my cam locks for my dump trailer battery box they fit perfectly I am a first time customer and I will be a regular customer. Thank you


Ordered this lock and key set to change my toolbox set to match my side boxes.
Took less than 5 min to install and now all boxes use the same key.
Very happy with product.


Exact lock for the make and model tool box , shipped quickly, installed in 5 minutes. Don't waste your time and money on the so-called "universal locks". Would buy again from ETRAILER.


Works great as a direct replacement in a large, Dee Zee truck box.



Still working great after a year in harsh conditions. So well that I used them in two, additional Dee Zee boxes.


Not what I needed, so gave to a friend

Etrailer Expert

Jenny N.


You mentioned that this was not what you needed and I wanted to ask if you were able to find what you are looking for. I am happy to help if you have any questions.


I placed an order for some locks and it was easy. The order arrived on time and I was able to track it. The follow up email was a very nice and professional touch. I will use etrailer again.

Thank You


I purchased several of these locks so that all of my tool boxes were keyed the same and they work great


The locks were perfect, easy to install, and work wonderfully. I was also impressed because I left a message and it was actually returned for a product about $25 with taxes. Impressive. I will be using etrailer again.


This item was not received. It is not in the package.


What a great experience. Had what I needed at a great price and the service/delivery speed was exceptional. The lockset fit well and worked beautifully. Thanks, etrailer! I will definitely be back and recommend the site.


Fast delivery was a great fit for my tool box. Installed in minutes. Now I can lock up my stuff. Thanks!


This product was exactly what I was looking for. It fit my Delta toolbox perfectly and it was an excellent price. It was delivered quickly and I would definitely by from here again. Quality products and service.


Great customer service. Key lock set worked perfect.
Would definitely purchase again with etrailer.


Perfect replacement for my UWS toolbox lock!


The lock and key that I purchased worked exactly like it was supposed to. The product arrived quickly and was a good transaction

Show More Reviews

See what our Experts say about this UWS Accessories and Parts

  • Recommended Replacement Lock Cylinder and Keys for Truck Side Box
    Replacement Lock Cylinder for UWS Toolboxes w Square Paddle Handles - CH503, # UWSLOCKCH503 is the lock cylinder you are looking for. Your picture was a huge help to ensure we recommended the right replacement for your toolbox. This kit comes with both one cylinder and two keys.
    view full answer...
    Image 1 for
  • Does the Replacement Lock Cylinder Come with Keys
    Yes. The Replacement Lock Cylinder for UWS Toolboxes w Square Paddle Handles - CH503 # UWSLOCKCH503 comes with the key required to operate the lock.
    view full answer...
  • Getting Two Lock Cylinders for UWS Toolbox Keyed Alike
    The replacement lock cylinders we have available for UWS Toolboxes like the cylinder # UWSLOCKCH510 you were looking at are each designed for a specific key number. This allows you to replace the existing lock core on your toolbox to match the key that you already have. For example this Lock Cylinder # UWSLOCKCH510 uses key CH510. This number would be stamped onto the lock core itself. With that being said if you are simply looking to replace the lock core on your UWS toolbox and don't...
    view full answer...
  • Replacement UWS Key Number CH503
    The UWS key part number for the CH503 is # KEYCH503.
    view full answer...
  • Can Locking T-Handle for UWS Toolboxes be Ordered Keyed Alike
    The Replacement Locking T-Handle for UWS Toolboxes # UWSTHLOCK isn't available as keyed alike, but what you can do is if the lock cores don't match you can order 4 of the replacement cylinder # UWSLOCKCH503 to get all of them keyed alike.
    view full answer...
  • Cam Lock for a Delta Truck Toolbox on a 1999 Ford Ranger
    I recommend replacing the cam locks on the toolbox with some new ones especially if the keys to yours are floating around out there somewhere! We have cam lock # CAM44340 that uses a flat key (2 keys included) and it is 5/8 inches thick.
    view full answer...
  • Availability of Plunger Style Lock for GM Toolbox
    It sounds like you are looking for a replacement lock cylinder like the part # UWSLOCKCH503. This is designed for UWS toolboxes with square paddle handles so I'm not sure about compatibility with your GM toolbox but this lock has a cylinder that has a 0.72" diameter and from the back of the face to the paddle measures 0.63".
    view full answer...
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  • Replacement Lock and Keys for UWS Toolboxes
    There are several different lock and key replacements for UWS toolboxes and each one is different from the next. There is a chance you could end up with the same lock and key that you already have on the box but you would just need to order a different number than what is printed on the lock face or key to get a completely different set. For example, if you ordered # UWSLOCKCH503 you would get a lock and keys for CH503. I have included part links to all of the replacements we have for...
    view full answer...
  • Is the Replacement Lock Handle for UWS Secure Lock Handle Available to be Keyed Alike?
    The Replacement Lock Handle for UWS Secure Lock Crossover Truck Toolboxes # UWS003-SLLKBLK is not available to be keyed alike, however I do have another similar solution. What you can do is buy two of thee Replacement Locking T-Handle for UWS Toolboxes # UWSTHLOCK and also get two Replacement Lock Cylinder for UWS Toolboxes w Square Paddle Handle # UWSLOCKCH503. You'll need to swap the cores that came with the handle with these, but after that these handles will both use the same key.
    view full answer...

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