McGrath Keyed to Differ Replacement Cylinder - Suits NX1 Digital Smart Lock - 2 Keys Included
This McGrath replacement lock cylinder is designed to suit McGrath MLNX1 Series digital smart locks. It restores or replaces the mechanical key override barrel used for backup entry when the electronic side of the lock is not being used.
Supplied keyed to differ (KTD), each cylinder carries its own unique key combination, so its keys open only this cylinder and no others.
The cylinder is supplied complete with 2 keys. It is a replacement cylinder only and does not include the lock body or any electronic parts.
Usually same day if ordered before 11am AEST (excluding weekends and QLD public holidays)
Key Features
- Direct replacement key override cylinder for McGrath MLNX1 Series smart locks
- Keyed to differ (KTD): each cylinder has its own unique key combination
- Supplied with 2 keys, ready to use
- Genuine McGrath spare part, matched to the host lock format
- Restores mechanical backup entry without replacing the whole lock
What's in the Box
- 1 x McGrath replacement cylinder (Keyed to Differ (KTD))
- 2 x keys
Suitable Uses
- Replacing a lost, damaged, or worn key override cylinder on a compatible McGrath smart lock
- Restoring a unique, independent key for a single lock
- Re-establishing mechanical backup entry after the original keys are lost
- Servicing and maintenance by locksmiths and installers
- McGrath NX1 Digital Smart Lock
Available Finish Options
Brass
(This Product)
MLSPNX1KDCYL
Finish selection does not affect functionality, compliance, or performance.
Related McGrath Parts & Host Locks
Full Specifications
Frequently Asked Questions
It is the mechanical barrel that lets you unlock the door with a physical key as a backup to the electronic access methods. Our guide to the mechanical key override explains how this backup layer works, and where the keyhole is usually located on a smart lock.
No. This is a replacement cylinder only. It fits the host lock listed above but does not include the lock body or any electronics.
Keyed to differ means the cylinder has its own unique combination. Its keys open only this cylinder, not any other.
Yes. A matching McGrath key blank is available for this cylinder so a locksmith can cut additional keys. See McGrath Key Blank - Suits NX1 Lock.
Additional Information
This cylinder is the mechanical key override barrel for the McGrath NX1 Digital Smart Lock. On these locks the physical key is a backup to the electronic access methods, so a working cylinder keeps you covered if the electronics are ever unavailable. If you need the opposite keying arrangement, the McGrath Keyed Alike Cylinder - Suits NX1 covers the same host locks.
Order the matching McGrath Key Blank - Suits NX1 Lock if you need additional keys cut. If you are unsure which cylinder your lock takes, confirm the host lock model before ordering, as the barrel format is specific to each McGrath series.
This is a cylinder only. It does not include the lock body, handles, or any electronic components.
Warranty
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.
Click on the image below to begin your expert Smart Lock consultation
