How to Change a Lock on a Metal Filing Cabinet
Changing the lock on a metal filing cabinet is an easy DIY project that can be completed in just a few steps. With some basic tools and a new lock, you can upgrade the security of your filing cabinet and prevent unwanted access.
Introduction
Metal filing cabinets are common in homes and offices for storing important documents, files, and other valuables. Over time, the original keys can become lost, stolen, or duplicated without your knowledge. Replacing the lock is the best way to fully secure your confidential information and possessions.
Changing the lock only takes about 30 minutes. All you need is a Phillips screwdriver, a hammer, some scissors or wire cutters, and a new filing cabinet lock. With these simple supplies and our step-by-step instructions, you can easily swap out the old lock for a new one.
Benefits of Changing Your Filing Cabinet Lock
- Prevents access with lost or stolen keys
- Upgrades old, worn locks for better security
- Provides peace of mind knowing your valuables are more secure
- Allows you to control who has access with new keys
- Requires minimal tools and easy process
What You’ll Need
Before starting this project, gather the following supplies:
- Phillips screwdriver
- Hammer
- Scissors or wire cutters
- New filing cabinet cam or pin tumbler lock
- Replacement keys for new lock
Look on the front or sides of your filing cabinet to determine the size and style of lock needed. Bring this information with you to purchase a compatible replacement lock.
Removing the Old Lock
With your supplies gathered, you’re ready to get started:
Step 1: Clear Out Drawers
Remove everything stored inside the filing cabinet drawers. This gives you full access to the lock and mechanism. Place the contents on a table or the floor in an organized manner so you can properly refile them later.
Step 2: Unscrew Lock Cover
Use the Phillips screwdriver to remove the screws from the faceplate cover over the lock. On most standard vertical filing cabinets, you’ll find 2-4 screws to remove. Set them aside in a safe place.
Carefully pull off the metal plate covering the old lock. You should now have full access to the lock mechanics.
Step 3: Remove Lock Cylinder
Look for a screw or release tab that holds the cylinder in place. This is typically found on the underside or backside of the lock.
Use your screwdriver to remove the lock cylinder retaining screw. This will release the cylinder from the latch mechanism.
If your cabinet has a release tab instead, push it in to release the cylinder.
Step 4: Disconnect Lock Tailpiece
The tailpiece is the rectangular metal piece that connects the back of the lock cylinder to the latch/release bar inside the drawer.
Locate where the tailpiece attaches to a pin on the latch mechanism inside the cabinet. It may be connected by a small screw or spring clip.
Carefully detach the tailpiece so the lock cylinder is completely disconnected. You can now fully remove the old lock.
Step 5: Clean Out Lock Hole
Use the hammer and screwdriver to gently tap out any remaining lock parts or debris inside the lock hole.
You want a clean space to install the new lock and ensure proper functioning. Wipe out the old lock opening with a dry cloth.
Installing a New Filing Cabinet Lock
Once the old lock is fully removed, you can install an upgraded replacement. Follow these steps:
Step 1: Examine New Lock
Closely look over the new lock cylinder and notice how it is constructed. Identify the front, back, and tailpiece.
Understand how the tailpiece attaches to the latching mechanism before proceeding. Review any manufacturer instructions for the new lock.
Step 2: Insert Lock Cylinder
Slide the new lock cylinder into the hole in the cabinet. Push it fully into place until flush with the outside of the cabinet.
Attach the retaining screw or tab to hold the cylinder securely in the lock hole. Tighten using your Phillips screwdriver.
Step 3: Connect Tailpiece
Attach the tailpiece end of the lock cylinder to the release bar and latch mechanism inside the drawer. This may use a screw, spring clip, or other method.
Check that the tailpiece is securely fastened and properly aligned. Test the lock a few times to ensure smooth motion.
Step 4: Replace Lock Cover
Position the front lock cover plate back over the opening. Install the screws to affix it in place using your screwdriver.
Ensure the lock and latch operate correctly from the outside. Test a few more times for proper functioning before reloading contents.
Step 5: Install New Keys
The new lock should come with 2-3 replacement keys. Make sure each new key works properly to open the lock.
Keep keys in a safe, secure place. Only provide duplicates to authorized persons that require cabinet access. Destroy any old keys.
Step 6: Reload Drawers
Once you’ve confirmed the new lock is installed correctly and working, carefully reload the filing cabinet drawers.
Organize contents properly into each drawer according to your preferred filing system. Keeping materials neatly filed preserves document condition.
Tips for Completing the Project
- Use masking tape to label disconnected pieces or make note of how parts fit together
- Work slowly and gently when removing old lock cylinder and components
- Ensure new lock tailpiece is aligned properly with latch mechanism
- Test lock function several times during install to catch any issues
- Ensure all screws are tightened fully to avoid loosening over time
- Keep all filing cabinet contents organized throughout the process
Changing locks is easier with proper preparation. Follow these tips for a smooth filing cabinet lock replacement process.
Frequently Asked Questions
What type of new lock do I need?
Look for replacement cam or pin tumbler locks made for standard vertical filing cabinets. Choose the same size and style as your existing lock. Bring the old lock with you to purchase a compatible new one.
What tools do I need?
A basic Phillips screwdriver, hammer, scissors or wire cutters, and replacement lock are all that’s required. Common household tools are sufficient for this easy DIY project.
How can I get replacement keys?
New filing cabinet locks usually come with 2-3 included keys. If you need extras, take one of the provided keys to a hardware store or locksmith to get duplicates made. Never label keys “filing cabinet.”
What if I can’t detach the old tailpiece?
Penetrating oil or lubricant can help loosen a stuck tailpiece screw. Allow it to soak in for 15-20 minutes. Tap lightly with hammer. Apply more leverage with a pair of pliers if needed.
Can I upgrade my old filing cabinet lock?
Yes, you can upgrade to a higher security lock, like ones with an anti-pick design. Choose one made specifically for filing cabinets. Follow our guide to remove the old lock and install the new upgrade.
How do I organize contents during the project?
Empty all drawers completely. As you remove folders and documents, place them in organized piles on a table or floor away from your workspace. Label piles to simplify refiling later.
Why won’t my new key turn the lock?
Ensure the lock cylinder is fully seated in the hole. The tailpiece should move when the key is turned – realign it if needed. Lubricate the cylinder with graphite powder if sticky. Call a locksmith for jammed locks.
How can I make the new lock more secure?
Only provide duplicate keys to trusted individuals. Store keys securely to prevent unauthorized access. Consider adding an additional keyed door lock as an extra layer of protection.
Conclusion
Replacing the worn or compromised lock on your metal filing cabinet is an important upgrade to properly secure your private documents and valuables from unwanted access. With minimal DIY skills and tools, you can swap out the old lock for improved security in just an afternoon.
Carefully following each step of our guide ensures the project goes smoothly from start to finish. In no time, you’ll have total peace of mind knowing your confidential information is protected behind a new filing cabinet lock. Just be sure to keep duplicate keys limited to only essential people that require access.
