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LATSML03
Mortice Budget Lock 90 X 19.5 X 25.4mm
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Mortice Budget Lock 90 X 19.5 X 25.4mm Yellow Passivated
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Delivery Information
| Delivery Time Frame | Delivery Information |
| Next Working Day By 1PM | When an order is placed by 3pm for next working day on certain items |
| Standard Delivery | Usually delivered in 2 to 4 working days |
| Delivery Charges | |
| UK Mainland | Prices start at £3.95 for very small items, £6.50 for small, £9.50 for medium and £20 for large/long items |
| Scottish Highlands & Islands, Northern Ireland & Ireland | Prices from £30, please see our delivery page for more info. |
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£4.50
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Description
Reliable Concealed Security with the Mortice Budget Lock 90 X 19.5 X 25.4mm
Managing utility cupboards, maintenance risers, access panels, and service shafts across commercial and residential premises presents a frequent operational challenge. Property managers, site engineers, and joiners often require a discreet locking system that prevents casual tampering while allowing authorised maintenance personnel swift access without juggling complex, dedicated keys. Uncontrolled utility cupboards can lead to damaged pipework, disturbed electrical supplies, and unsightly unlatched doors that breach basic site hygiene standards.
The Mortice Budget Lock 90 X 19.5 X 25.4mm provides an effective, straightforward solution designed specifically for low-security utility closures. Engineered to mortice flush into the timber edge of doors and access panels, this compact latching unit keeps your panels neatly closed and locked against everyday interference. It operates via a standard square-drive budget lock key, giving facilities teams and visiting tradespeople universal access through common service tools without unnecessary complications.
Manufactured with a durable yellow passivated steel casing, this lock provides strong resistance to everyday moisture, corrosion, and wear. Its slim 19.5mm case width and standard 90mm overall depth make it suitable for a wide selection of narrow frames, hollow partition walls, and slim joinery cupboards. At Doorfit, we supply trade professionals with hardware that performs consistently on the job, and this budget lock delivers dependable mechanical operation with minimal ongoing upkeep.
Step by Step Installation and Practical Execution
Stage 1 Initial Marking and Panel Preparation
Begin by identifying the desired lock position on the closing edge of your door or access panel. Mark the vertical centreline carefully, taking into account the 90mm case depth and the 25.4mm faceplate width. Accurate initial alignment prevents binding during subsequent chisel work and keeps your escutcheon and keyway perfectly square to the outer face.
Stage 2 Cutting the Mortice Pocket
Drill a sequence of neat pilot holes using a clean auger bit sized to match the 19.5mm lock body width. Carefully clean out the remaining timber with a sharp wood chisel to form a uniform, plumb mortice cavity. Clear all wood chips completely so the steel body slides into place smoothly without excessive forcing or lateral pressure.
Stage 3 Faceplate Recessing and Keyway Drilling
Trace around the perimeter of the 25.4mm faceplate and pare away the door edge until the plate sits perfectly flush. Measure the spindle centre from the front edge to mark the face of the panel, then drill a clean through-hole to accommodate your standard square-drive budget key or optional decorative escutcheon.
Stage 4 Final Fixing and Striker Plate Alignment
Secure the mortice body using appropriate wood screws into pilot holes on the door edge. Close the door gently to transfer the bolt position onto the outer frame, then recess and screw the receiver strike plate into the jamb to guarantee positive deadbolt engagement whenever the panel shuts.
Key Operational Advantages
The Mortice Budget Lock 90 X 19.5 X 25.4mm offers an ideal balance of practical security and effortless maintenance. Below are the functional benefits that make this lock a preferred choice for tradespeople and maintenance departments across the UK.
- Protective Yellow Passivated Finish. The chemical passivating treatment coats the robust steel body, providing effective protection against oxidisation in damp risers, cellar cupboards, and unheated plant rooms.
- Universal Square-Drive Functionality. The internal turning mechanism operates with a standard square budget key, eliminating the need to issue costly, dedicated cylinder keys to visiting service contractors.
- Compact Mortice Profile. With a body width of only 19.5mm, this lock fits easily into narrow timber frames, thin sub-frames, and lightweight core doors without compromising timber structural integrity.
- Reversible Handing. The deadbolt mechanism accommodates both left-hand and right-hand opening door configurations without requiring complex dismantling on site.
- Tidy Flush Appearance. Once morticed into the woodwork, the lock remains completely hidden from view when the door is closed, maintaining a clean architectural appearance along corridors and panel runs.
Technical Specifications
| Specification | Rating or Standard | Practical Details |
|---|---|---|
| Overall Case Depth | 90mm | Requires a 90mm deep timber mortice pocket for smooth insertion. |
| Case Width | 19.5mm | Slim body profile suitable for standard internal doors and joinery panels. |
| Faceplate Width | 25.4mm (1 inch) | Standard British joinery faceplate width for quick chisel rebate cutting. |
| Protective Coating | Yellow Passivated | Zinc passivated surface treatment provides good resistance to indoor damp and tarnish. |
| Operation Method | Square Drive Socket | Operated using standard British commercial budget lock keys and T-bars. |
| Door Handing | Universal Non-Handed | Can be installed on either left-hand or right-hand opening cupboards and doors. |
Frequently Asked Questions
What type of key operates this budget lock?
This lock features an internal square receiver socket that turns using a standard budget key or square-drive T-key. These keys are widely carried by service personnel, plumbers, electricians, and caretaking teams across the UK, allowing quick access without tailored key suites.
Can this lock be fitted to external doors?
The lock is designed primarily for internal timber doors, service ducts, riser cupboards, and sheltered storage cupboards. While the yellow passivated finish provides good corrosion resistance against moisture, budget locks do not offer high-security locking points suitable for external building perimeters.
What does the yellow passivated finish do?
Yellow passivation is a protective chemical conversion coating applied over zinc plating. It significantly slows down the formation of rust and surface oxidation, which is especially helpful when locks are fitted inside unheated service shafts, cellars, or utility cupboards where humidity can fluctuate.
Is the lock reversible for left or right closing doors?
Yes, the symmetrical design of the deadbolt mechanism means you can install the body in either orientation without making adjustments to the internal components. Simply orient the lock to match the position of your frame strike plate.
Need Advice on Your Architectural Ironmongery Project?
Our experienced ironmongery specialists at Doorfit are ready to help you source the right locks, strikes, keys, and accessories for your residential or commercial installation.
Contact Our TeamSpecification
| Finish | Yellow Passivated |
|---|---|
| Dimensions | 90mm X 25.4mm |