Lockwood 3572DXKONCYL Digital DX Mechanical Keypad Mortice Lock with Key Override - 60mm Backset - No Cylinder
At A GlanceAt A Glance
DISPATCH3 Business Days
SPECIAL ORDERNot returnable
PIN Code 
Key Override(your cylinder)
The Lockwood 3572DXKONCYL is the 3572DXKO key override keypad mortice lock supplied without the key override cylinder: a fully mechanical keypad lock for commercial doors that need coded entry without any wiring, batteries or electronics, prepared for a cylinder from your own keying system. It is the no-cylinder member of Lockwood's Mortice Digital DX family at the standard 60mm backset.
The lockset pairs a Lockwood 3572 cylinder mortice lock with the Digital DX keypad on the outside face, and is matched with Lockwood 1800 or 2800 series door furniture on the inside. Enter the code, turn the keypad knob, and the latch retracts; from the inside, the handle opens the door freely at all times with no code required. Once your locksmith fits a cylinder to the key override preparation beside the keypad, building managers, security staff or emergency services can open the door with a key, independently of the code.
This variant exists for locksmiths and building managers who need the override cylinder to match an existing master key or restricted key system. If you do not have a cylinder of your own to fit, the 3572DXKO is the same lock with a cylinder included and is almost certainly the one you want. New to battery-free keypad locks? Our guide What Is a Mechanical Digital Lock? explains how the coding chamber inside works.
Usually ships in 12 business days.
View the full range of battery-free keypad locks here: Digital Mechanical Locks Collection
Battery free. Hassle free.
This is the same lock as the Lockwood 3572DXKO, supplied without a key override cylinder. It exists for locksmiths and building managers who need to fit a cylinder from their own keying or master key system rather than use the standard supplied one. If you are not sure which you need, you almost certainly want the 3572DXKO - it includes a cylinder ready to go. Contact us if you are not sure which one is right for your door.
This product is a special order item and is not returnable. It is also handed, so please confirm your door's handing and suitability before ordering - see Handing and Ordering below, or Contact Us if you are not sure.
A mortice lock body and all-mechanical keypad built for frequent daily use on commercial doors, with a key override preparation for the doors where lockout is never acceptable. For a plain-English look at what separates commercial-grade keypad locks from light-duty units, see Heavy Duty Commercial Mechanical Digital Locks - including when a key override earns its place.
Key Features
- Fully mechanical keypad lock - no batteries, no wiring, no electronics to fail
- Key override preparation with no cylinder supplied - your locksmith fits a cylinder from your existing master key or restricted key system, so authorised users, building managers and emergency services can open the door with a key, independently of the code
- 3572 cylinder mortice lock body with the standard Australian 60mm backset
- Coded entry: press C to clear, enter your code, then turn the keypad knob to retract the latch
- The keypad knob freewheels until a valid code is entered - a clutching action that protects the internal parts if someone forces the knob
- The entered code cancels automatically once the knob is operated, so the door is never left standing on an open code
- Inside lever or knob gives free single-action exit at all times - no code needed to get out
- Stainless steel latch bolt with 19.5mm projection
- Code is set by a mechanical tumbler chamber and re-set at the bench using the supplied code change kit - any 4, 5 or 6 digit code
- Handed at order (left or right hand) to match your door - see Handing and Ordering
- Field-serviceable: replacement keypads and spare code tumblers keep the lock in service for decades
Need a Complete Internal/External Package?If you want a single box that includes both the Digital DX keypad for the outside and a matching internal lever or knob - ready to install with nothing else to source - the Lockwood 002DX deadlatch family is the one to look at. It is also a common choice for 
apartment fire doors, where the 002 deadlatch combined with coded entry and free internal exit meets the egress requirements of most tested doorset schedules - always confirm against your building's approved fire door schedule before ordering.
- 002-1LDXSC - Lever inside, door opens inwards
- 002-1KDXSC - Knob inside, door opens inwards
- 002-4LDXSC - Lever inside, door opens outwards
- 002-4KDXSC - Knob inside, door opens outwards
The key choice is which way your door opens (inwards or outwards) and whether you prefer a lever or knob on the inside face. Not sure? Contact Us and we will confirm the right variant for your door.
Decoding Lockwood Model Numbers
Lockwood's DX model numbers look cryptic, but they follow a simple pattern once you know it. Reading a code like 3572DXKOLSCNCY (the left-hand version of this lock) from left to right:
One caveat: the short backset families count differently (3782, 4782, 5782 and 6782 step through 23, 25.4, 30 and 38mm backsets), but the idea is the same - the first digit steps through the backset options. If you need this key override lock at a deeper backset, the KO version is ordered against the 4572 (89mm) or 5572 (127mm) platform - Contact Us to arrange it. Not sure which backset your door has? Our guide to measuring your lock backset shows you in two minutes.
Code Control - How the Code Works and How to Change It
The 3572DXKONCYL ships with a factory-set 4 digit code, which you can change to any 4, 5 or 6 digit code of your own. The code lives in a mechanical tumbler chamber behind the keypad - there is no memory chip and nothing to reset electronically. Because it is a chamber rather than a sequence, each digit can be used once per code and the digits can be pressed in any order; the C button always clears a wrong entry and cannot be part of the code. Our pillar guide explains how the coding chamber works and why the digits are order-independent.
Changing the code is a bench job, and an honest word: it is a fiddly one - the tumblers are small and the sequence matters - but it is entirely doable with the kit and the instructions in front of you. The full procedure is on page 4 of the Lockwood DX Digital Service Manual. We have also written the whole thing up in plain English - see the Lockwood DX section of our code-changing guide, the shared bench method, and the one rule that saves callouts: test the new code five times before you close the door.
One advantage the KO models have over their PIN-only siblings: once a cylinder is fitted to the override preparation, a forgotten or mis-set code is an inconvenience, not a lockout - the key still opens the door while you sort the chamber out at the bench.
Access Methods
What's in the Box
- Digital DX keypad access pad
- 3572 cylinder mortice lock body (60mm backset), handed as ordered
- Mounting plate and codepad assembly
- Codepad spindle and adaptor components
- Fixing screws and mounting hardware
- Code change kit
- Installation instructions
The key override cylinder and its keys. This variant is prepared for a cylinder from your own keying system, supplied and fitted by your locksmith. If you need the lock with a cylinder included, order the 3572DXKO instead.
Parts & Components (Key Override)
The key override locks carry their own keypad and cylinder parts, listed separately on page 10, so before ordering a replacement keypad send us a photo and we will confirm the correct part. The SPDX-50SC and SPDX-20SC replacement keypad pages carry the same caution. The cylinder you fit is serviced or re-pinned by your locksmith, like any other on your key system.
Suitable Uses
- Sites with an existing master key system, where the locksmith needs to fit a cylinder pinned to that system
- Building managers supplying restricted-key cylinders across multiple tenancies
- Commercial access doors where a keyed override path is required alongside coded entry
- Office entry points, staff-only doors, service corridors, plant rooms and utility rooms
- Replacing an existing 60mm backset mortice lock without re-machining the door
- Any door that needs keypad entry but where batteries, wiring or app dependence are unwanted - browse the full Digital Mechanical Locks range, or read mechanical vs smart locks if you are weighing up both paths
This variant is supplied without a cylinder. Unless you are a locksmith or building manager with a specific cylinder to fit, the 3572DXKO (with cylinder) is the correct choice. Contact us if you are not sure.
Handing and Ordering
The Lockwood mortice DX platform is not field-reversible: this no-cylinder lock is ordered as a left-hand unit (3572DXKOLSCNCY) or a right-hand unit, and the correct one must be selected when you order. Stand on the outside (keypad side) of the closed door: if the hinges are on your left, you need the left-hand unit; hinges on your right, the right-hand unit. If you have never had to think about door handing before, our guide Understanding Door Handing in Australia walks through it with diagrams, and explains what goes wrong when the handing is wrong. Still unsure? Send us a photo via Contact Us and we will confirm it for you.
Key Override 3572 / 4572 / 5572 Series Variants
Available Finish Options
Satin Chrome
(This Product)
STK 3572DXKONCYL
Finish selection does not affect functionality, compliance, or performance.
Item Code Family - Lockwood DX Mechanical Keypad Range
This table combines complete Lockwood DX locksets, replacement keypad assemblies and Selector conversion kits. Check carefully whether the product is a full lockset, a keypad-only replacement part, or a kit that requires an existing compatible mortice lock. For an honest comparison of how the Lockwood DX range stacks up against the other battery-free brands we stock, read Lockwood vs Borg vs Carbine.
Full Specifications
Dimensions
Fire Doors and Egress
Mortice DX locksets are commonly specified on commercial fire door assemblies, and the 3572DXKONCYL suits that egress logic: entry is code-controlled (with a keyed path for authorised access once a cylinder is fitted), but exit through the inside handle is always free and single-action. Even so, no lock should be described as automatically fire compliant on its own. Fire performance belongs to the complete tested doorset - the door leaf, frame, lock, furniture, cylinder preparation and the installer's compliance - not to the lock in isolation.
Two practical notes for this model: the key override preparation and the cylinder you fit to it are part of the tested combination, so confirm the cylinder is permitted on the doorset schedule before it goes in; and on Digital DX fire door applications the rubber mounting pad must not be fitted where the manufacturer's instructions require its omission.
Before fitting this lock to a fire door, always confirm suitability against the approved fire door schedule, the door manufacturer's requirements and the complete tested hardware combination. Our guides explain the ground rules: Apartment Fire Doors on the Gold Coast - What Locks Are Actually Compliant? and Fire Door Types and Lock Certification in Australia. You can also browse the locks we list for fire doors in the Fire Door category.
Important: If you are not sure whether your door is a fire door, or what its schedule allows, Contact Us before ordering - and before anyone drills. On older Gold Coast fire doors, read why your locksmith warns you about asbestos before drilling.
Frequently Asked Questions
The lock ships with the key override preparation but no cylinder, so the cylinder comes from your locksmith or your site's keying system - that is the point of this variant. Cylinder formats differ between key systems, so confirm the cylinder type with your locksmith or with us before you order: send us the details of the cylinders already on site and we will check the fit. If you do not have a cylinder to fit, order the 3572DXKO, which is the same lock with a cylinder included.
Yes - the lock body, keypad, code operation, 60mm backset and handing are the same as the 3572DXKO. The difference is that no cylinder (and so no key) is supplied: the key override preparation is there, ready for the cylinder you fit. If nobody will ever need a key, the PIN-only 3572DX is the simpler buy.
Stand on the outside (keypad side) of the closed door. Hinges on your left means the left-hand unit (3572DXKOLSCNCY); hinges on your right means the right-hand unit. This lock is not field-reversible, so getting this right at order time matters - our door handing guide has diagrams, or send us a photo and we will confirm it.
Only with the doorset's paperwork behind you. The 3572DXKONCYL has the right egress behaviour for fire doors - free single-action exit from the inside - but fire compliance belongs to the complete tested door assembly (including the key override preparation and the cylinder you fit), not the lock alone. Check the approved fire door schedule first, and see our fire door compliance guide or ask us before ordering.
60mm is the standard Australian mortice backset, so for most commercial doors the answer is yes - but measure before you order: centre of the existing keyhole or spindle to the door edge, per our backset measuring guide. If your door measures 127mm, the deep-backset member of this family is the 5572DX (PIN-only; ask us about a KO configuration at that backset).
Additional Information
Warranty
Lockwood products bought new in Australia through authorised channels are covered against defects in materials and workmanship: 25 years on mechanical components, 3 years on electrical and electronic parts (PADDE and electric mortice locks 5 years; batteries excluded), 12 months on keys, and finish cover that varies by finish type (up to 25 years on Everbrass). Proof of purchase required for all claims.
Download PDF Resources
Lockwood's DX service manual - exploded parts diagrams, orderable models, the code change procedure and mounting instructions with drilling templates. Jump straight to setting a new code (page 4), the Key Override parts tables, including the no-cylinder variants (page 10) or the Key Override mounting instructions and drilling templates (page 21).
The 002, 530 and Selector families that sit alongside this lock.
The full Lockwood warranty terms - coverage periods, limitations, exclusions and the claims process.
Lockwood 3572DXKONCYL - FAQ, Setup and Owner's Guide
Everything locksmiths, building managers and specifiers ask about the 3572DXKONCYL, in one place. For the wider battery-free picture, start with Chapter 16 of our Buyer's Guide (Mechanical Digital Locks) and the pillar guide What Is a Mechanical Digital Lock?
Codes and Everyday Use
Two ways once your cylinder is fitted. By code: press C to clear anything already entered, press your code digits, then turn the keypad knob - the latch retracts, the door opens, and the code cancels automatically as the knob is operated. By key: use the key for the cylinder you have fitted to the override preparation and open the door directly, no code needed. From the inside, the handle always opens the door freely.
That is the clutching mechanism doing its job. Until a valid code is entered, the knob freewheels and is not connected to the latch - so forcing or wrenching it transmits nothing to the lock's internals. Enter the code and the knob engages for one operation. It is one of the reasons these locks survive decades on high-traffic commercial doors.
It is a bench job with small parts, and we will not pretend otherwise: the keypad comes off the door and the code tumblers are repositioned with the supplied kit - fiddly, but well within reach of a patient owner with the instructions open. The factory procedure is on page 4 of the Service Manual; our plain-English version is the Lockwood DX section and bench method of the code-changing guide. And the golden rule: test the new code five times before you close the door - and once your cylinder is fitted, the override key means even a botched change is recoverable.
Any 4, 5 or 6 digit code, with one mechanical rule: each digit can be used only once per code, because the code lives in a physical tumbler chamber rather than a memory chip. The digits can be pressed in any order, and the C button is always the clear key (it can never be part of the code). The pillar guide explains how the chamber works and why order does not matter.
With a cylinder fitted to the override preparation, that question has a comfortable answer: use the override key, open the door, take the keypad to the bench and set a fresh code with the kit. No locksmith callout, no drilled lock. On the PIN-only DX models a forgotten code is a bigger nuisance - which is exactly why the KO configuration exists for doors where guaranteed access matters.
The Key Override and Your Cylinder
Treat it like any other high-authority key: building management, the site security holder, and whoever your fire door schedule or emergency plan nominates. The whole value of the override is that it works when the code path does not - so the key should live somewhere controlled and findable, not on a hook by the door it opens. Our commercial guide covers when key override earns its place on commercial doors.
No keys ship with this lock: the keys come with the cylinder your locksmith fits to the override preparation. Spare, replacement and restricted keys are then ordered through that locksmith or whoever manages your key system, the same way as for every other lock on it. Plan for the cylinder to be fitted as part of the installation, and confirm the cylinder type with your locksmith or with us before you order - cylinder formats differ between key systems.
Yes - that is what this variant is for. Your locksmith fits a cylinder pinned to your existing master key or restricted key system to the override preparation, so the lock works with the keys already in circulation. If you would rather have the lock arrive with its own cylinder, the 3572DXKO is the same lock supplied with one. Contact Us if you want us to check a cylinder before you order.
Ordering, Handing and Variants
Stand on the outside (keypad side) of the closed door: hinges on your left means the left-hand unit (3572DXKOLSCNCY), hinges on your right means the right-hand unit. The mortice DX platform is handed at order and not field-reversible, so this is the one detail to get right before checkout. Our handing guide covers how to determine handing and what happens when the handing is wrong.
Measure from the centre of the existing spindle or keyhole to the door edge - two minutes with our backset measuring guide settles it. 60mm is the Australian standard and what this 3572DXKONCYL fits. If your door measures 127mm, the family's deep-backset lock is the 5572DX - PIN-only as listed, so ask us about a key override configuration at that backset before ordering. Guidance on where each size turns up is in standard Australian backset sizes.
Same lock, three override configurations: the 3572DX is PIN-only (no cylinder at all); the 3572DXKO includes the keyed override cylinder ready to go; this 3572DXKONCYL is the KO lock supplied without a cylinder for sites fitting their own to suit an existing key system. If nobody will ever need a key, the 3572DX saves you money; if a manager, owner or the fire brigade must always be able to get in, buy KO.
Not as supplied. On the Lockwood mortice DX platform, hold-back is a key-operated option tied to a specific cylinder configuration rather than a button on the keypad. If trading-hours free passage matters to your door, tell us before you order and we will steer you to the right configuration - and read Passage Mode vs Holdback Mode first, including why hold-back is never used on fire doors.
No - the mortice DX locksets are matched with Lockwood 1800 or 2800 series furniture for the inside face, ordered to suit your door. If you want a single box with keypad and internal handle included, that is the 002DX deadlatch family - see the complete package callout on this page for the four variants.
Installation and Door Prep
On a fresh timber door with the manual in hand, a confident DIYer can do it: the Key Override mounting instructions and full-size drilling templates are on pages 21-22 of the Service Manual, covering all three backsets - note the KO preparation includes the cylinder hole, so it differs from the standard DX prep, and on this variant the cylinder you supply is fitted as part of the install. On a door that already has hardware, a fire door, or anything metal-framed, use a locksmith - the prep tolerances are what make these locks run sweetly for years. Local to the Gold Coast? Terry's installs what we sell.
The 3572DXKONCYL suits doors from 32mm to 50mm thick. Standard Australian commercial doors sit comfortably inside that range; if your door is outside it (very thin aluminium infill, or an unusually thick solid-core leaf), talk to us before ordering rather than after.
Gold Coast apartment fire doors from certain eras can contain asbestos in the core, and drilling one without checking is a genuine health and legal risk - and the KO cylinder preparation means one more hole than the standard DX. Read the three risk windows and what to do next before any holes go in.
Fire Doors and Egress
Its behaviour is right for it: exit through the inside handle is single-action and never needs a code or a key, which is the pattern egress paths demand. The cylinder you fit sits on the outside face and does not touch the exit path. What the lock cannot do is make the doorset compliant by itself - that certification belongs to the whole tested assembly. Our commercial guide explains how exit paths are assessed, and the fire door rules are laid out in our fire door compliance guide.
Because printing a rating a doorset does not hold would be doing you a disservice. Fire performance is tested and certified against complete door assemblies - leaf, frame, lock, furniture, cylinder prep, the cylinder you fit and installation together - and it is the approved fire door schedule for your building that says what may go on your door. Bring us the schedule (or a photo of the door tag) and we will give you a straight answer. Background reading: Fire Door Types and Lock Certification in Australia.
Care, Coastal Conditions and Warranty
Wash it. The 25 year mechanical warranty excludes corrosion damage from coastal air, salt spray and high humidity, so near the water a regular fresh-water wipe-down of the keypad, cylinder and furniture - and following Lockwood's published care guidance at lockweb.com.au - is what keeps both the finish and the claim alive. For doors in direct salt spray, compare the salt-spray-rated Carbine CDL7 range and read our honest brand corrosion comparison.
Spares exist, but check the part first: the key override family carries its own keypad and cylinder parts, listed with the no-cylinder variants on page 10 of the Service Manual, so send us a photo and we will confirm the correct part before you order (the SPDX-50SC and SPDX-20SC replacement keypads serve the PIN-only DX locks). Spare code tumblers are stocked, and the cylinder you fit is serviced or re-pinned by your locksmith like any other on your key system. This serviceability is a large part of why mechanical digital locks out-live sealed electronic units.
The DX Range - Related Products, Guides and Chapters
Products: 3572DX (PIN-only, 60mm backset) | 3572DXKO (cylinder included) | 5572DX (127mm backset) | 530DXSC | 530DXSC/PADSX2 (dual keypad) | 002DX deadlatch family | SPDX-50SC spare keypad | SPDX-20SC spare keypad | 3772-DXKITSC | 3772-DXKOKITSC (key override kit) | 3782-DXKITSC | 3782-DXKOKITSC (key override kit) | Browse the whole Digital Mechanical Locks category, the Has Backup Key category or the Lockwood range.
Guides: What Is a Mechanical Digital Lock? | Changing Codes on Mechanical Digital Locks | Lockwood vs Borg vs Carbine | Heavy Duty Commercial Mechanical Digital Locks | Measuring Your Lock Backset | Understanding Door Handing in Australia | Latch vs Bolt Mechanical Digital Locks | Buyer's Guide Chapter 16: Mechanical Digital Locks.
What's in the Box - Lockwood 3572DXKONCYL
- Digital DX keypad access pad (Satin Chrome)
- 3572 cylinder mortice lock body - 60mm backset, handed as ordered
- Mounting plate and codepad assembly
- Codepad spindle and adaptor components
- Fixing screws and mounting hardware
- Code change kit
- Installation instructions
The key override cylinder and its keys. This variant is prepared for a cylinder from your own keying system, supplied and fitted by your locksmith. If you need the lock with a cylinder included, order the 3572DXKO instead.
Lockwood 3572DXKONCYL - Dimensions
Lockwood DX Mechanical Digital Range - Product Brochure
The complete mechanical digital section of the Lockwood Keyless Entry Catalogue - the 002, 530 and Selector DX families that sit alongside the 3572DXKONCYL, plus the accessories, kits and ordering procedure for the range. Prefer it as a file? Download the catalogue excerpt (PDF).
PDF Files - Lockwood 3572DXKONCYL
Parts diagrams (Key Override parts on page 10), code change procedure, Key Override mounting instructions and drilling templates (pages 21-22).
The 002, 530 and Selector DX families, accessories and ordering procedure.
The full warranty terms, limitations and claims process.
Lockwood DX Digital - Schematics and Exploded Views
The manufacturer's schematic and exploded-view sheets for the Lockwood DX digital lock range - useful for identifying parts, understanding the assembly, and ordering spares. The matching orderable parts tables are in the DX Digital Service Manual.
Lockwood Warranty
Lockwood branded products are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty periods vary by product type, with separate cover for mechanical components, electrical and electronic parts, keys, and finishes.
The summary below sets out the standard warranty structure. All warranty claims are handled by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries. Full terms and exclusions are set out in the official Lockwood warranty document linked at the base of this page.
Warranty Summary
Finish Coverage Guide
- Everbrass finishes: up to 25 years against corrosion, tarnishing and discolouration.
- Stainless steel, polished stainless steel, chrome plating and anodised finishes: typically up to 10 years.
- PVD and VIVID finishes: typically up to 10 years.
- Symmetry range finishes: typically up to 5 years.
- Decorative finishes (Antique Copper, Architectural Bronze, Oil Rubbed Bronze, Aged Brass, Polished Brass, Satin Brass and related variants): typically up to 2 years against corrosion.
- Unlacquered brass finishes naturally age and change appearance over time. This is not considered a defect.
- Tea staining of stainless steel is not covered where the required cleaning and maintenance have not been followed.
How to Make a Claim
- Contact Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries with your proof of original purchase.
- Keep the product securely packed and clearly identified, ready for assessment.
- Where a claim is escalated to the manufacturer, ASSA ABLOY may issue a case number before goods are returned.
- ASSA ABLOY assesses the claim and determines repair, replacement with the same or closest equivalent product, or refund of the purchase price.
Exclusions
- Normal wear and tear.
- Misuse, abuse, accidental damage or use outside published specifications.
- Improper maintenance or failure to follow care instructions.
- Unauthorised modification, repair or use of non-genuine parts.
- Exposure to corrosive environments including coastal air, salt spray, chemicals or pollution.
- Removal, refitment or associated labour charges.
- Products not originally sold in Australia through authorised channels.
These manufacturer warranties apply in addition to your rights under the Australian Consumer Law. Our goods come with guarantees that cannot be excluded under the ACL. You are entitled to a replacement or refund for a major failure and to compensation for any other reasonably foreseeable loss or damage. Where a failure does not amount to a major failure, you are entitled to have the goods repaired or replaced.
Confused? Overwhelmed? We get it.
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