Borg BL3400GATE Mechanical Digital Gate Lock - Single Keypad - Marine Grade - Black
At A Glance
At A Glance
DISPATCHSame Day Before 11am
PIN CodeThe Borg BL3400GATE is a fully mechanical marine grade digital gate lock for external metal box-section gates - keypad and free-turning clutched lever on the outside, and a lever that is always free on the inside, so leaving never needs the code. It is the value pick of the single-sided gate set: the same forend-fixed platform and 3400-series full lever handle as the MG Pro ECP version, with the code changed On The Bench. Where mechanical digital locks dominate on gates - and why - is covered in Buyer's Guide Chapter 16 - Gates.
The lock mounts with Borg's forend fixing system: two telescopic through-bolt fixings clamp the unit straight onto a square metal gate post from 30mm to 60mm - no mortice cutting and no door-edge drilling. The spring-loaded latch self-latches as the gate swings closed and adjusts from 65mm to 80mm projection, the housing carries an anti-climb design with no external foothold, the 3400-series lever is made for pulling a heavy or outward-opening gate, an optional holdback on the inside lever holds the latch retracted for free passage, and the marine grade keypads are salt spray tested to 1,000 hours. No battery, no wiring, nothing to go flat.
Changing the code means taking the lock off the gate and rearranging the red coded and blue uncoded code pieces at a bench with the supplied tweezers - fine where the code rarely changes. If codes will turn over regularly - even once a year - the on-gate BL3400 MG Pro ECP is the smarter buy; see how Borg's code change methods compare.
Usually ships same day if ordered before 11am AEST (excludes weekends and Queensland public holidays).
The BL3400 clamps directly onto a square aluminium or steel gate post using Borg's forend fixing system - through bolts pass through the post and secure the lock body firmly, with no mortice cutting required. Standard fixings suit posts from 30mm to 60mm square; wider posts can be accommodated with a latch extension and round posts with the Borg round post kit. See the Forend Fixing System section below for the exploded diagram.
The inside lever operates freely at all times, so anyone on the inside can leave immediately without entering a code - the configuration to choose wherever free exit matters. The honest caveat with any single-sided lock on an open-style gate is reach-through: if the inside handle can be reached over or through the gate, the keypad is bypassed. Solid infill or height fixes it, or step up to the code-both-sides BL3430GATE - the trade-off is laid out in the single-sided problem.
The keypad is marine grade quality, salt spray tested to 1,000 hours, with the housing finished in Black Powder Coat - suited to coastal and outdoor gate installations. The 1,000 hours is a laboratory cabinet result (the finish held up that long in continuous salt fog), not a promise of service life on the coast. For maximum coastal protection the BL3400 MG Pro ECP steps up to Borg's full Marine Grade Pro external coating - the difference is explained in what MG Pro means, and the test itself in salt spray hours compared.
To change the PIN, the lock comes off the gate and the red (coded) and blue (uncoded) code pieces are rearranged at a bench with the supplied tweezers. It is fiddly but doable, and fine where codes change rarely; if you expect to change the code with any regularity - even once a year - choose the on-gate Easicode Pro versions instead: BL3400 MG Pro ECP (single-sided, like this lock) or BL3430 MG Pro ECP (back-to-back). See the code change section below.
The holdback function on the inside lever holds the latch retracted so the gate swings freely both ways - handy for moving gear through, open days, or trade access. On a pool barrier gate, only use holdback while a compliant self-latching gate latch (such as a MagnaLatch) is fitted and doing the barrier's self-latching job - this lock's own latch never does that job. Never rely on holdback for a fire or egress door. The mode is explained in passage mode vs holdback mode.
The keypad holds a single code at a time - everyone who uses the gate shares it, and there is no audit trail of who came and went. If individual codes or access logs matter, that is smart lock territory - see what mechanical digital locks will not do.
The lock is entirely mechanical. There is no power source, no cabling to run to the gate, and no battery to go flat in the rain - one of the main reasons mechanical digital locks remain the default choice for external gates. How it works inside is covered in how a mechanical digital lock works.
The BL3400 is at its best on residential and light commercial gates - side gates, complex access gates, service yards - where the gate sees regular but not constant use.
For a doorway or gate cycling all day, every day, step up to a heavy duty mechanical digital lock: the Borg BL7701 heavy duty lever/lever (single keypad, free egress, like this lock) or the Carbine CDL7200 dual keypad heavy duty. What separates heavy duty hardware is explained in heavy duty commercial mechanical digital locks.
Access Methods
This is a mechanical digital lock: the outside keypad is the only way in, and the inside lever is always free for exit. There is no app, fob, card or key override on this model.
Key Features
- Single-sided: 14-button keypad and clutched lever outside, free lever inside - no code needed to exit.
- Full lever handle - designed for pulling a heavy or outward-opening gate, and easier than a knob for frail hands or anyone with limited grip.
- Free-turning clutched outside lever - the handle spins without engaging until the correct code is entered, so force on the lever cannot open the gate.
- Optional holdback function on the inside lever - holds the latch retracted for free passage.
- Marine grade quality keypad, salt spray tested to 1,000 hours; Black Powder Coat housing.
- Over 8,000 code combinations; digits can be entered in any order; the code is changed On The Bench.
- Forend fixing system - two telescopic through-bolt fixings clamp the lock to the gate post; no mortice cutting.
- Suits square gate posts from 30mm to 60mm on standard fixings; latch extensions and a round post kit are available for other profiles.
- Spring-loaded latch bolt, self-latching on gate close, adjustable from 65mm to 80mm projection.
- Anti-climb housing design - no external foothold for scaling the gate.
- Security fixings and 20mm bolt withdrawal.
- Fully mechanical - no batteries, no wiring, nothing to go flat.
- Handing easily reversible on site.
Changing the Code - On The Bench
The BL3400GATE uses Borg's standard coding chamber, and the code is changed On The Bench. It is a careful bench job: the lock comes off the gate, the two red screws are removed and the cover plate lifted gently (fourteen springs sit behind it), then with the C code piece held down the red coded and blue uncoded code pieces are rearranged with the supplied tweezers - square cut-outs facing outward, coloured mark facing upward. The code always starts with C, the digits work in any order, and spare red and blue code pieces are supplied so the code can be lengthened or shortened. Test the new code several times before reinstalling. The full illustrated procedure is in the series instructions (PDF), and the wider context in changing the code on a mechanical digital lock.
One practical tip: the coding chamber can be set and verified on the bench before the lock ever goes on the gate - much easier than recoding a fitted lock later. If you expect to change the code with any regularity - even once a year - the Easicode Pro BL3400MGPROECP changes it on the gate instead.
Forend Fixing System - How the Lock Mounts
Unlike a door lock, the BL3400 never needs a mortice pocket. The lock body sits on the face of the gate post and two telescopic through-bolt fixings pass right through the post, clamping the unit firmly - a front collar and sleeve assembly on the keypad side, with a rear collar fitted from the post's rear side. Standard fixings suit square posts from 30mm to 60mm. If your post sits outside that range, measure before ordering - our guide to measuring the gate stile and the forend fixing option walk through it, and the accessories table below lists the latch extension and round post kit.
What's in the Box
- Borg 3000 Series lock x1 (keypad unit, inside lever and latch assembly)
- Tweezers tool x1 (On The Bench code changes)
- Code pieces - coded (red) x4
- Code piece - uncoded (blue) x1
- Front collars x2
- Fixing sleeves x2
- Through-bolt fixing screws x2
- Latch bracket assembly x1
- Hex key x1 (latch projection adjustment)
Suitable Uses
- Aluminium and steel pedestrian gates on residential, duplex and strata properties where keyless code-in / free-out access is wanted. Browse all digital mechanical locks.
- Coastal and beachside side gates - the marine grade keypad is built for salt air, on a value budget.
- Driveway pedestrian gates where one-way code access is the requirement and the code rarely changes.
- Heavy or outward-opening gates where the full lever handle makes pulling the gate easy - including for users who find a knob difficult to turn.
- Budget-conscious installations where on-gate code change and the MG Pro coating are not needed - the On The Bench version does the same job for less.
Not a fire-rated door lock, and not for high-traffic commercial entries - see the notes above. On pool barrier gates, a compliant self-latching gate latch must do the barrier's job and inspector sign-off applies - see the FAQ.
Available Finish Options
Black (Powder Coat)
(This Product)
STK BL3400GATE
Finish selection does not affect functionality, compliance, or performance. Black Powder Coat is the only finish for this model - the MG Pro ECP version carries the full Marine Grade Pro black coating instead.
Borg BL3100-BL3400 Metal Gate Lock Family
All ten models are purpose-built forend-fixing gate locks for metal box-section gate frames - fully mechanical, no batteries, black finish, 65-80mm adjustable latch. They differ in keypad configuration, marine grade tier, code change method, and key override.
Marine Grade models are finished in black powder coat with marine grade keypads (salt spray tested to 1,000 hours); MG Pro models carry Borg's Marine Grade Pro external coating. Easicode Pro (ECP) models change codes on the gate; the other models change codes On The Bench, with the lock off the gate. DKO = Double Key Override: a euro cylinder key override that can also deadlock the latch and lock out the code, while the BL3175GATEK's key override is a plain emergency-access override; the euro cylinder is not supplied on any key override model in this table. For help decoding Borg's model naming, see the Borg naming guide. Locking a metal gate but working with a timber gate elsewhere on site? The Borg BL4441 MG Pro ECP is the back-to-back MG Pro ECP lock for wooden and timber gates, and the BL4401 MG Pro its single-sided sibling.
Accessories and Spare Parts
Every catalogued accessory and spare for the standard-chamber Borg gate locks is listed below - one of the reasons this range outlasts hardware-store keypad locks is that the parts that wear are all available as spares.
Spare red and blue code pieces are supplied in the box for lengthening or shortening the code. No spare keypad is catalogued for the BL3100-BL3400 gate lock series - if a keypad is damaged in service, contact us and we will handle it under warranty or source a resolution with Borg directly. The Easicode latch extension (BLGATELATCHNEW) and the Easicode change key belong to the ECP models, not this On The Bench version.
Borg BL3400 - Technical Specifications
Dimensions
Frequently Asked Questions
The lock body sits on the face of the gate post and two telescopic through-bolt fixings pass right through the post, clamping the unit with a rear collar fitted from the post's rear side - no mortice pocket and no door-edge drilling. The spring-loaded latch projects from the lock body into a strike on the closing post, and its projection adjusts from 65mm to 80mm with the supplied hex key. See the exploded diagram in the Forend Fixing System section.
On The Bench - the lock comes off the gate. Remove the two red screws, lift the cover plate carefully (fourteen springs sit behind it), hold the C code piece down, then rearrange the red coded and blue uncoded code pieces with the supplied tweezers - square cut-outs facing outward, coloured mark facing upward. The code always starts with C and the digits work in any order; spare red and blue code pieces are supplied to lengthen or shorten the code. Test thoroughly before reinstalling. The illustrated procedure is in the series instructions (PDF). If that sounds like a chore you will face often, the Easicode Pro BL3400MGPROECP changes codes on the gate in minutes.
The lock's job is access control, not the barrier's self-latching function. Our site-wide position is straightforward: a bolt-format lock is never allowed on a pool barrier gate because a bolt does not secure anything until it is thrown, but a self-latching latch lock like this one is fine so long as a genuinely compliant self-latching gate latch (such as a MagnaLatch) is doing the barrier's self-latching job. The inside handle is always free for egress. Holdback is only acceptable on a pool barrier gate while that compliant gate latch is fitted and doing the self-latching - this lock's own holdback is an access-control convenience, not a barrier safety feature (see holdback on pool barrier gates). See the full pool safety barrier gate treatment in our latch vs bolt guide, and get final sign-off from a licensed pool safety inspector before you specify any lock for a pool gate.
Same single-sided gate lock on the same body and fitting, two differences: this BL3400GATE uses the On The Bench code change (lock removal to recode, over 8,000 combinations) with marine grade keypads and a Black Powder Coat housing, while the BL3400 MG Pro ECP adds Easicode Pro on-gate code change (over 4,000 combinations) and the full Marine Grade Pro external coating. Choose this version where codes rarely change; choose the MG Pro ECP for coastal exposure or regular on-site code management.
Measure the post before ordering. For wider square posts the 50mm latch extension extends the reach, and round posts take the round post kit. Our guide to gate frame size options walks through the measuring.
Additional Information
- Set the code before installation: the coding chamber can be set and verified On The Bench before the lock goes on the gate - far easier than removing a fitted lock for the first code change.
- Maintenance: Monthly: wipe the keypad, lever and exposed latch with a light spray of silicon-based lubricant (such as GT85) and remove the excess with a soft cloth. Do not use oil-based lubricants such as WD-40 - they attract dirt and wear down internal parts over time. Annually: remove the lock from the gate, spray the inside through the code piece holes on the reverse of the keypad with silicon-based lubricant, spray all fixings, accessories and the latch with silicon-based lubricant, then press each button and operate both levers several times to confirm smooth operation. Marine grade keypads resist salt attack; they do not exempt the lock from this care. Full steps are in the Borg Lock Servicing Guide (PDF).
- Reach-through check before you buy: on an open-style gate, confirm the inside lever cannot be reached over or through the infill - if it can, solid infill, added height, or the back-to-back BL3430GATE closes the gap.
- Gate stops and magnetic latches: a moving, slamming gate is the main cause of latch misalignment call-backs. If your gate currently uses a magnetic latch, read why magnetic gate latches can be problematic before the changeover.
- No key override on this model: if the code is lost, the lock cannot be bypassed with a key from outside (the inside lever still exits freely). Where a keyed fallback matters, the family's DKO and GATEK models take a euro cylinder (not supplied) - see the family table.
- Handing: units are factory-set for a right-hand hung gate (handing taken from outside) and reverse easily on site. Australian handing conventions are explained in understanding door handing.
Warranty
All Borg locks are warranted against mechanical defects in materials and workmanship under normal use and service for a minimum of 12 months from date of sale. The warranty does not cover damage arising from misuse, vandalism, or improper installation. The lock must not be dismantled - doing so will invalidate the warranty. Proof of purchase required for all claims.
Download PDF Resources
One-page leaflet for the standard (non-ECP) 3400 and 3430 gate locks in Black Powder Coat - lever handle design, the 30-60mm post range, latch adjustment, fixings and the dimensioned drawings - the source document for this lock.
Borg's three-page parts list, installation and handing guide for the BL3100-BL3400 gate locks - establishing the hand of the gate, latch projection and position adjustment, and the On The Bench code changing procedure.
Borg's general maintenance guide for pushbutton keypad locks - monthly silicone-based lubricant care and an annual full service. This is the routine to follow for this lock.
Borg BL3400 - FAQ, Setup and Owner's Guide
Everything below is here to help you buy, install, set up and live with your Borg BL3400 gate lock. For the full mechanical digital picture, see Buyer's Guide Chapter 16.
Codes and the On The Bench Code Change
Behind the cover plate sits a row of code pieces, one per button. Red coded pieces make a button part of the code; blue uncoded pieces make it a decoy. The lock reads which coded buttons have been pressed - not the order - which is why the digits work in any sequence. Rearranging the code pieces changes the code, and spare red and blue code pieces are supplied so the code can be lengthened or shortened. The mechanism is unpacked in the coding chamber explained and any-order codes.
It is a careful bench job rather than a hard one: two red screws, a gently lifted cover plate with fourteen springs behind it, the C code piece held down, and tweezers to rearrange the code pieces - square cut-outs outward, coloured mark up, code always starting with C. Allow unhurried time at a bench, follow the illustrated instructions (PDF), and test at least five times before the lock goes back on the gate. If that sounds like a chore you will face often, the Easicode Pro version does the whole job on the gate in minutes.
The practical security of a mechanical keypad is less about raw combination count and more about code discipline: change the factory code at installation, avoid obvious patterns, and refresh the code whenever it has been shared widely. The free-turning clutched lever means force on the handle achieves nothing, and the housing offers no foothold. What these locks will and will not do is covered in the limitations.
Egress and Compliance
Yes - the inside lever is mechanically free at all times and retracts the latch regardless of the keypad state. That makes this configuration the right pick wherever exit must never depend on knowing a code. The flip side is reach-through on open-style gates, covered in the single-sided problem; where that risk is real, the back-to-back BL3430GATE closes it.
Engaging holdback holds the latch retracted so the gate swings freely both ways - useful for trade access, moving gear, or an open day. It is an access-control convenience, not a safety feature: on a pool safety barrier gate, only use it while a compliant self-latching gate latch (such as a MagnaLatch) is doing the barrier's self-latching job, and never rely on a gate lock in any mode on a fire or required egress door. The mode logic is explained in passage vs holdback - pool gates and fire doors.
The lock's job is access control, not the barrier's self-latching function. Our site-wide position is straightforward: a bolt-format lock is never allowed on a pool barrier gate because a bolt does not secure anything until it is thrown, but a self-latching latch lock like this one is fine so long as a genuinely compliant self-latching gate latch (such as a MagnaLatch) is doing the barrier's self-latching job. The inside handle is always free for egress. Holdback is only acceptable on a pool barrier gate while that compliant gate latch is fitted and doing the self-latching - this lock's own holdback is an access-control convenience, not a barrier safety feature (see holdback on pool barrier gates). See the full pool safety barrier gate treatment in our latch vs bolt guide, and get final sign-off from a licensed pool safety inspector before you specify any lock for a pool gate.
No - it is a gate lock, not a fire-rated door lock, and no fire rating is documented for this series. Keep it on gates. For fire and egress doorways, specify hardware certified for that duty. Background: keypad locks and fire doors.
Gate Fit and Installation
Standard fixings suit square metal box-section posts from 30mm to 60mm. Measure the post width (the face the lock mounts to) and the post depth (the direction the through bolts pass), and check nothing obstructs the bolt path. Wider posts take the 50mm latch extension and round posts take the round post kit - both in the accessories table on the Description tab. The measuring routine is in measure the stile first.
The spring-loaded latch adjusts between 65mm and 80mm using the supplied hex key - anti-clockwise to increase the projection, clockwise to reduce it. The latch position itself can also be adjusted by removing the two side screws. Both procedures are illustrated in the series instructions (PDF).
Yes, the lock is easily reversed on site to suit either hand of gate; units are factory-set for a right-hand hung gate, and handing is always taken from the outside. The handing chart is in the series instructions PDF, and the Australian conventions are explained in how to determine handing.
Yes. Gates move, sag and slam in wind, and a gate that has been living on a forgiving magnetic latch often needs a gate stop and alignment attention before a mechanical latch and strike will engage sweetly every time. Read the two kinds of magnetic latch before the changeover.
Environment and Durability
This model pairs a marine grade quality keypad (salt spray tested to 1,000 hours) with a Black Powder Coat housing. The MG Pro models carry Borg's full marine external grade coating across the whole lock. For a gate in direct salt air - waterfront, beachfront, marina - the coating tier is what decides how the lock looks and works in year three, and the MG Pro ECP version is worth the step up. See what MG Pro means and how the brands compare on corrosion.
Monthly: a light spray of silicon-based lubricant (such as GT85) over the keypad, lever and exposed latch, excess wiped off - never WD-40 or other oil-based lubricants, which attract dirt. Annually: a full service - the lock comes off the gate, the inside is sprayed through the code piece holes on the reverse of the keypad, and every button and both levers are cycled to confirm smooth operation. The routine is set out in the Borg Lock Servicing Guide (PDF). Why maintained mechanical locks outlast neglected electronics on the coast: coastal lifespan guide.
Choosing and Comparisons
Both are single-sided marine grade gate locks with On The Bench code change and optional holdback, on the same forend-fixed platform. The difference is the handle: the BL3100BLK uses the standard 3000-series operation, while this 3400 adds the full lever handle - the pick for heavy or outward-opening gates you pull rather than push, and for anyone who finds a knob or paddle difficult to grip. Borg's model numbering is decoded in Chapter 16 - Borg naming.
Single-sided (this lock) whenever free exit matters or the code only needs to guard entry. Back-to-back - the BL3430GATE, the same On The Bench code change with keypads both sides - when the gate must be code-controlled in both directions and reach-through bypass has to be closed. The decision logic is in why double-sided gate locks exist.
No - this is the metal box-section gate specialist. For wooden and timber gates the single-sided pick is the Borg BL4401 MG Pro - the 4400 series shares this lock's free-turning lever keypad but fixes to timber.
Probably not. For all-day, every-day cycling, specify heavy duty hardware: the Borg BL7701 heavy duty (single keypad, free egress, SFIC key override - the natural heavy duty step-up from this lock) or the code-both-sides Carbine CDL7200 dual keypad heavy duty. What "heavy duty" really buys is in high-traffic hardware explained.
An exposed external gate is the one place a mechanical digital lock beats a smart lock almost every time: no battery to die in the weather, no electronics to corrode, no app dependency - just a coated metal mechanism that keeps working. The honest trade is one shared code and no audit trail. Both sides of the argument: why mech-digi dominates on gates and Chapter 16 - mechanical vs smart.
Related Products, Guides and Chapters
- Borg BL3400 MG Pro ECP - this lock upgraded to on-gate code change and the full Marine Grade Pro coating.
- Borg BL3430GATE - back-to-back sibling, code required both sides, same On The Bench code change.
- Borg BL3100BLK - the single-sided gate lock without the lever handle.
- Borg BL4401 MG Pro - the single-sided lock for timber gates.
- All digital mechanical locks - the full battery-free range.
- Buyer's Guide Chapter 16 - Mechanical Digital Locks - the chapter-level gate treatment.
- MG Pro and ECP explained - decoding Borg's suffixes.
- Why double-sided locks are a smart choice for gates.
What's in the Box - Borg BL3400
- Borg 3000 Series lock x1 (keypad unit, inside lever and latch assembly)
- Tweezers tool x1 (On The Bench code changes)
- Code pieces - coded (red) x4
- Code piece - uncoded (blue) x1
- Front collars x2
- Fixing sleeves x2
- Through-bolt fixing screws x2
- Latch bracket assembly x1
- Hex key x1 (latch projection adjustment)
Borg BL3400 - Dimensions
Borg 3400 Series - Product Leaflet
The complete leaflet is also available as a download: Borg 3400 Series Leaflet (PDF).
PDF Files - BL3400GATE
One-page leaflet for the standard (non-ECP) 3400 and 3430 gate locks in Black Powder Coat - lever handle design, the 30-60mm post range, latch adjustment, fixings and the dimensioned drawings - the source document for this lock.
Borg's three-page parts list, installation and handing guide for the BL3100-BL3400 gate locks - establishing the hand of the gate, latch projection and position adjustment, and the On The Bench code changing procedure.
Borg's general maintenance guide for pushbutton keypad locks - monthly silicone-based lubricant care and an annual full service. This is the routine to follow for this lock.
Borg Locks Warranty
Borg products sold in Australia are covered against mechanical defects in materials and workmanship under normal use and service. Warranty claims are handled by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries.
Warranty Summary
What the Warranty Covers
- Mechanical defects in materials and workmanship
- Defects arising under normal use and service conditions
- Repair or replacement of defective units at the discretion of the Australian distributor (LSC)
What the Warranty Does Not Cover
- Damage arising from misuse, vandalism, or abuse
- Damage resulting from improper installation
- Locks that have been dismantled - dismantling invalidates the warranty
- Normal wear and tear
- Cosmetic damage not affecting function
How to Make a Claim
- Contact Terry's Tradies Pty Ltd first if you purchased through us or one of its associated trading names - we will assess the issue and manage the warranty process with LSC on your behalf. You do not need to contact LSC or Borg Locks UK directly.
- Have your proof of purchase ready (receipt or order confirmation).
- Warranty claims for Borg products in Australia are processed through LSC, the authorised Australian importer and distributor. Where an item is returned to LSC, freight charges must be prepaid and the item returned within the warranty period.
- If LSC finds the returned item to be defective, it will be repaired or replaced, and a detailed assessment report is provided to the customer after examination.
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 the goods fail to be of acceptable quality and the failure does not amount to a major failure. The Borg manufacturer warranty above operates alongside - and does not limit - these statutory rights.
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