McGrath Keyed to Differ Cylinder - Suits X3 Deadbolt - 2 Keys Included
This McGrath replacement key-override cylinder is the mechanical barrel that provides the backup key entry on the McGrath X3 Digital Deadbolt (MLAX3 series). It lets you unlock the deadbolt with a physical key if the batteries are flat or the electronics are unavailable, so the lock is never solely dependent on power.
Supplied keyed to differ (KTD): this cylinder operates on its own unique key combination, independent of any other lock.
The cylinder is supplied complete with 2 keys. This is a replacement cylinder only - it does not include the deadbolt assembly or any electronics.
Usually same day if ordered before 11am AEST (excluding weekends and QLD public holidays)
This cylinder is the physical-key backup for your X3 smart deadbolt. If you are unsure where the keyhole sits on your model or how override behaves when the battery is dead, see the mechanical key override guide.
Key Features
- Direct replacement key-override cylinder for the McGrath X3 Digital Deadbolt (MLAX3 series).
- Restores mechanical key entry as a backup to the electronic access methods.
- Supplied keyed to differ (KTD) with 2 keys included.
- Brass barrel construction.
- Cylinder only - no deadbolt assembly, no electronics, no battery.
What's In The Box
- 1 x X3 deadbolt replacement key-override cylinder (KTD)
- 2 x keys
Suitable Uses
- Replacing a lost, worn, or damaged override cylinder on a McGrath X3 Digital Deadbolt.
- Re-keying the deadbolt to a fresh, uncompromised key set after keys go missing.
- Keeping the deadbolt on its own independent, unique key.
Available Finish Options
Brass
(This Product)
STK MLSPX3CYLKD
Finish selection does not affect functionality, compliance, or performance. The cylinder is a functional brass barrel; it is largely concealed within the deadbolt once installed.
Related McGrath Parts & Host Lock
Fit this cylinder into your existing X3 deadbolt. Use the X3 key blank to cut additional keys, and see the X3 deadbolt page if you need the complete host lock.
Full Specifications
Frequently Asked Questions
No. This is the replacement key-override cylinder only, supplied with 2 keys. It fits into your existing X3 deadbolt.
Keyed to differ (this cylinder) means the barrel has its own unique key, independent of any other lock. Keyed alike would mean matched cylinders share one common key. Choose keyed to differ when the deadbolt should have its own separate key.
Yes. A locksmith can cut additional keys from the matching McGrath key blank. See the McGrath X3 key blank for the correct blank profile.
Common reasons are lost keys (re-key for security), a worn or stiff barrel, or wanting a fresh, uncompromised key set. Background on how the override fits into a smart lock is in the authentication stack overview.
Additional Information
- The mechanical override is the layer that keeps a smart deadbolt usable when the battery is flat. Keeping a working override cylinder and a spare cut key is good practice - the override guide covers what to do when the battery is completely dead.
- Keyed to differ means this X3 barrel carries its own unique key, independent of any other lock in the building.
- Cylinder replacement is a straightforward locksmith task; the barrel is retained within the deadbolt and does not require replacing the whole lock.
- If you would rather not store the spare key indoors, the override guide also covers secure key hiders for outdoor storage.
12-month warranty against defects in materials and workmanship (24-month on ALBION, ASCOT, WINDSOR, ULTRA SECUA, HAMILTON, BARDON and STAFFORD models). McGrath Locks will repair, replace, or refund at their discretion. Proof of purchase required for all claims. Returns & Warranty | McGrath Locks Warranty
McGrath Locks Warranty
Warranty Summary
How to Make a Claim
- Contact Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries (the place of purchase) within the applicable warranty period.
- Supply your proof of original purchase — a receipt or tax invoice is required.
- Provide a clear description of the fault and your contact details.
- You may be asked to return the product for assessment before a remedy is determined.
- McGrath Locks will, at their discretion, repair the product, replace it with the same or an equivalent model, or provide a refund of the purchase price.
Exclusions
This warranty does not cover:
- Normal wear and tear
- Products that have been disassembled
- Damage caused by improper handling, incorrect installation, misuse, abuse, neglect, modification, or accident
- Installation by unlicensed persons (including non-licensed locksmiths or technicians)
- Products not used in accordance with the supplied instructions
- Cosmetic damage that does not affect functionality
- Labour or installation costs related to the removal or reinstallation of products
- Exposure to conditions outside normal environmental use
- Work completed before warranty approval
- Damage caused by battery leakage, battery failure, or force majeure
Important Notes
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if they fail to be of acceptable quality and the failure does not amount to a major failure. This warranty is provided in addition to your rights and remedies under the Australian Consumer Law.
Further Information
It can be overwhelming with all the choices out there. We can help! We are experts with decades of experience in fitting locks of all types, not just Smart Locks. It is a free service we offer, and with just some photos and a few minutes of your time you can get expert advice and product recommendations tailored precisely to suit your needs.
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