Introduction
This manual provides essential information for identifying, using, and maintaining your EasyKeys Tubular Replacement Key for CompX Chicago DA0440. This key is specifically designed for CompX Chicago locks within the DA0001 - DA1799 series, corresponding to the DA0440 code.
Setup: Identifying Your Lock Code
Before ordering or using your replacement key, it is crucial to accurately identify the lock code of your existing CompX Chicago lock. The replacement key will only function correctly if the code matches precisely. Refer to the image below for common locations where your lock code can be found.

Image Description: This diagram illustrates four primary locations where you can find your lock code. These include directly on the existing key (e.g., 'FR322'), engraved on the face of the lock cylinder (e.g., 'FR322'), on a label positioned inside or behind the lock mechanism (e.g., 'CODE: G38'), or on a label affixed to the cabinet or door near the lock (e.g., 'HF321').
Important Notes for Code Identification:
- Manufacturer Specificity: Lock codes are unique to their manufacturer. Ensure your lock is a CompX Chicago brand when using this key.
- Key Cut Variations: Even if codes appear similar across different brands, the actual key cuts vary significantly. Always verify the manufacturer.
Operating Instructions
To operate your CompX Chicago lock with the EasyKeys DA0440 replacement key, follow these simple steps:
- Insert the Key: Gently insert the tubular key into the lock cylinder. The key is designed to fit only one way.
- Turn to Unlock/Lock: Rotate the key clockwise or counter-clockwise, depending on the lock mechanism, to engage or disengage the locking bolt.
- Remove the Key: Once the lock is in the desired position (locked or unlocked), return the key to its original insertion position and carefully withdraw it.
Maintenance
Proper care will extend the life of your replacement key and ensure smooth operation of your lock:
- Keep Clean: Avoid exposing the key to dirt, dust, or corrosive substances. If cleaning is necessary, wipe with a soft, dry cloth.
- Avoid Force: Do not force the key into the lock or apply excessive pressure when turning. If the key does not turn easily, inspect the lock for obstructions or damage.
- Storage: Store the key in a safe place to prevent bending or damage.
Troubleshooting
If you encounter issues with your replacement key, consider the following:
- Key Does Not Insert Fully: Check for any debris or obstructions in the lock cylinder. Ensure the key is oriented correctly.
- Key Does Not Turn: Verify that the lock code on your key matches the code on your lock. If the codes match, the lock mechanism might be jammed or damaged. Do not force the key.
- Key Feels Loose or Wobbly: This could indicate wear on either the key or the lock cylinder. If the key is new, re-verify the lock code and manufacturer compatibility.
- Lock Still Not Functioning: If troubleshooting steps do not resolve the issue, the lock itself may require professional inspection or replacement.
Specifications
| Brand | EasyKeys |
| Model Number | DA0440-compxchicago-key-969746 |
| Compatible Manufacturer | CompX Chicago |
| Lock Type | Cam |
| Material | Brass |
| Item Dimensions (L x W x H) | 0.5 x 0.5 x 1 inches |
| Item Weight | 4 ounces |
| Special Features | Adjustable Fit, Custom Cut Key, Durable |
Support Information
For further assistance or inquiries regarding your EasyKeys Tubular Replacement Key, please contact EasyKeys Inc. USA. This product is covered by a 30-day return policy from the date of purchase.
Manufacturer: CompX Chicago
Seller: EasyKeys Inc. USA