Can You Add Locks to Old Metal Filing Cabinets?

Adding locks to old metal filing cabinets is definitely possible for most models. With sensitive information and documents often stored in filing cabinets, having a lock provides an extra layer of security and peace of mind. While there are a few factors to consider, installing a lock on an old metal cabinet is usually a relatively straightforward process.

Reasons to Add Locks to Metal Filing Cabinets

There are several good reasons why you may want to add locks if your metal filing cabinets don’t currently have them:

• Enhanced security – Locks prevent unauthorized access to the contents inside a filing cabinet. This protects confidential documents and personal information from being accessed, stolen or tampered with.
• Compliance – Some industries and businesses require locking filing cabinets to comply with regulatory policies around data security and privacy. For example, healthcare, legal firms, financial institutions.
• Employee theft deterrent – Locks help deter dishonest employees from stealing sensitive files and information stored in cabinets. This gives companies more oversight and control.
• Personal privacy – For filing cabinets in homes, locks allow peace of mind that kids or guests won’t accidentally access your private paperwork and files.

Choosing the Right Locks

There are a few options when it comes to selecting locks for a metal filing cabinet:

Key Locks

The most common lock type used is a basic key lock. This lock requires a physical key that inserts into the lock and turns to open it. Key locks come in a variety of styles:

• Cylinder locks – These have a cylinder shape with the keyhole opening. Often the most budget-friendly option.
• Tubular locks – Also opened with a key but with a smooth tubular shape versus a cylinder. Provides added pick resistance.
• Disc tumbler locks – More advanced technology with rotating discs that the key raises to open. Very secure.

With key locks, the number of unique keys should match the number of cabinets/users for optimal security.

Combination Locks

For keyless access, combination locks provide a numeric passcode entry instead of a physical key. The benefits are:

• No need to track or distribute keys
• Codes can be easily changed if compromised
• Opened quickly with memorized code

The downside is the codes can be forgotten or more easily shared/stolen. So key locks tend to be more secure overall.

Electronic Locks

For advanced access control, electronic locks offer keypad, fingerprint, or RFID access. This allows for features like:

• Detailed access logs and alerts
• Restricting access to authorized users only
• Remotely managing and changing access

However, electronic locks require wiring and cost considerably more than basic key or combination locks.

Built-In Versus External Locks

Locks are available as complete door locksets installed into a cabinet or as external padlocks:

• Built-in locks integrally mount into pre-drilled holes on the cabinet doors. They create a seamless look.
• External padlocks attach onto the exterior and are less invasive to install. However, they stick out more prominently.

So built-in locks are ideal for a sleek integrated solution, while external padlocks offer more flexibility for quick DIY installations.

Installing Locks on Metal Filing Cabinets

Adding locks to old metal filing cabinets typically involves a few simple steps:

1. Evaluate Cabinet Compatibility

To add a built-in lockset, the cabinet doors will need to have pre-drilled holes and cutouts. Check for two spaced holes on each door near the latch that are the right size for attaching a lock.

If no pre-drilled holes exist, external padlocks are likely the best option.

2. Obtain Proper Lock Hardware

Look at the cabinet drill patterns and measurements to get the correctly sized locks. Take note of:

• Distance between the holes/cutouts
• Vertical centerline position
• Horizontal backset (distance from cabinet edge)

Take measurements to get locks that align properly. Many filing cabinet locks have standardized sizing but double check.

For external padlocks, ensure they are sturdy and of the appropriate shape to loop through existing cabinet door handles or hasps.

3. Install Lock Cylinders and Latch Mechanisms

The lock cylinders, latch hardware, and strike plates will securely mount into the door holes and cutouts using screws. Be sure to use the provided template and install the components in the proper alignment.

Follow all instructions from the lock manufacturer. Using power tools, carefully tighten all screws evenly to avoid stripping.

4. Add Lock Fronts and Covers

Attach the external housings and decorative trim that encase the lock cylinders and latch hardware mounted on the doors. This covers up the locking mechanisms for a streamlined look.

Make sure the fronts are centered and completely flush. Snap or screw them into place per provided instructions.

5. Testing for Proper Function

With installation complete, test opening and closing the cabinet doors using the provided keys or combinations. The doors should latch securely when closed. The locks should smoothly engage each time without too much play or sticking.

If the locks or latching seem uneven or dysfunctional, adjustments or disassembly may be required. Contact the lock company if any defects are found.

Finding a Locksmith for Help

If you need assistance selecting locks or installing them properly in your metal filing cabinets, locksmiths have the expertise to help. Services a professional locksmith provides typically include:

• Recommending high-quality locks suited for your cabinet
• Taking precise measurements of your cabinet for a custom fit
• Professionally installing built-in locksets
• Attaching external padlocks or retrofit kits if needed
• Ensuring correct alignment, spacing, and functionality
• Providing duplicate keys or resetting combinations
• Drilling new holes if your cabinet lacks pre-drilled ones

Many locksmiths can also unlock old filing cabinets you’ve lost keys or combos for. They can open them without damage and fit them with new locks.

Hiring a locksmith takes the guesswork out of adding locks yourself and ensures it’s done right. Look for an experienced professional locksmith in your area to assist.

Tips for Using Locking Metal Filing Cabinets

Once you’ve added locks, keep these tips in mind for properly utilizing your secure metal filing cabinets:

• Label keys clearly so users know which locks they correspond to
• If combining locks, use different style keys (tubular, cylinder) to avoid mixups
• Keep records of lock combos and master key locations
• Don’t keep confidential documents near doors where lock picking is possible
• Check locks routinely to make sure they function smoothly
• Consider storing the most sensitive items in inner drawers for added security
• Be careful not to lock items inside when keys or combinations are unavailable
• Have duplicates available in case of lost keys or forgotten combos
• Change combinations periodically if concerned they’ve been accessed by unauthorized people
• Make sure clearances allow drawers to open fully without catching on lock parts

Properly using your locks helps maximize the protection for your valuable contents. But always exercise caution and common sense when relying on any security device.

Questions and Answers About Adding Locks to Metal Filing Cabinets

Q: Are filing cabinet locks universal or do I need specific ones for my cabinet model?

Most filing cabinets use standardized sizing for built-in locks. But always check your cabinet door holes to confirm measurements. Locksmiths can identify and source locks made for your exact cabinet. For padlocks, make sure they fit through existing handles or hasps.

Q: How do I add a lock if my old cabinet doesn’t have pre-drilled holes?

If there are no existing holes, contact a locksmith to drill precise holes for installing built-in locks. Another option is using external padlocks attached through metal loops or hasps. No drilling is required for the padlock method.

Q: What tools do I need to install built-in filing cabinet locks myself?

You’ll need tools like a tape measure, drill, screwdriver, template, and safety equipment like glasses and gloves. Power drills allow installing screws evenly without stripping. Follow all installation instructions provided with the locks.

Q: How do I remove old locks from a filing cabinet that are no longer working?

Try lubricating the lock first. Use WD-40 or another light oil into the keyhole and mechanism. Call a locksmith if still not functioning. They have specialized tools to disassemble old stubborn locks and retrofit new ones. Avoid forcefully prying locks open.

Q: If I lose my filing cabinet keys, how do I get it open again?

Call a qualified locksmith. They have techniques to pick or bypass the lock cylinders without damaging cabinets. Once unlocked, they can install new replacement lock cores rekeyed to new keys. Keep spares and organize keys clearly to prevent this.

Q: Can I put locks on wood filing cabinets too?

Yes, the same key, combo, and electronic lock options work for wood cabinets. Install built-in locks into pre-drilled door holes. For wood with no holes, external padlocks attached to eye hooks or hasps may be better than drilling.

Conclusion

Installing locks on old metal filing cabinets provides significant security and privacy benefits for both office and home use. Key, combo, and electronic locks can be added to metal cabinets depending on your access needs. Built-in locksets or external padlocks offer flexible options. With some simple tools and instructions, retrofitting locks onto most cabinets is straightforward. Or turn to professional locksmiths for worry-free expert assistance. Properly using locks and keeping close track of keys or combos ensures your important contents stay protected.