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ALD-AS10527-RIMLOCK
Asec 140mm X 76mm Black Japanned Narrow Rim Lock AS10527
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Asec 140mm X 76mm Black Japanned Narrow Rim Lock
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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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£16.30
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£13.58
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Description
Timeless Security for Heritage and Narrow Stile Timber Doors
Finding authentic, reliable ironmongery for period properties or lightweight internal timber doors can often be a frustrating challenge. Many modern mortice locks require deep internal pocket preparation that can dangerously weaken historic timber frames, especially on doors built with slender narrow stiles. When working on renovation projects, cottage restorations, or outbuilding updates, property owners need an authentic hardware solution that respects the architectural fabric of the building while delivering consistent every day latching and locking security.
The Asec 140mm X 76mm Black Japanned Narrow Rim Lock AS10527 solves this classic joinery dilemma by mounting directly onto the interior face of your door. Designed specifically with a compact footprint, this dependable surface-mounted lock ensures you do not have to chisel away the structural core of your woodwork. Finished in an attractive traditional black japanned coating, it combines period-accurate aesthetics with durable mechanical simplicity, making it an outstanding choice for residential cottages, rustic barn conversions, and heritage refurbishment projects across the United Kingdom.
Why Choose the Asec Narrow Rim Lock
The Asec 140mm X 76mm Black Japanned Narrow Rim Lock AS10527 delivers dependable surface-mounted performance where standard modern hardware simply cannot fit. Below are the core practical advantages this lock brings to your home or renovation project.
Slimline Profile for Slender Stiles
With a compact case measuring just 140mm in width and 76mm in height, this narrow lock fits comfortably on doors with restricted stile widths where larger rim locks would overlap the moulding or fail to align neatly with the frame.
Authentic Black Japanned Finish
Treated with a traditional black japanned coating, the lock delivers a deep, protective semi-gloss lustre. This classic appearance complements antique black ironmongery, beeswax fittings, and rustic rim knobs perfectly.
Non-Invasive Surface Installation
Because the unit fastens directly to the room-facing surface of the door, installation requires minimal timber removal. Only small boreholes for the spindle and the keyway are necessary, protecting valuable antique woodwork.
Dual Latching and Locking Function
Equipped with both a sprung passage latch bolt and a solid deadbolt, this lock provides effortless passage operation alongside private keyed locking security whenever you need peace of mind.
Step-by-Step Installation and Operation Guide
Fitting the Asec 140mm X 76mm Black Japanned Narrow Rim Lock AS10527 is straightforward for trade professionals and capable DIY enthusiasts alike. Follow these four practical stages to ensure smooth operation and long-lasting alignment.
Stage 1: Position and Stile Marking
Hold the main lock case flush against the interior face and closing edge of the timber door. Mark the precise centres for the spindle follower and keyway through the lock body onto the timber face. Ensure the height is comfortable for everyday operation alongside your chosen door knob set.
Stage 2: Precision Timber Drilling
Carefully drill clean, perpendicular holes through the timber door for both the spindle and keyway. Drilling from both sides helps prevent breakout on the finished timber. Clear away any loose wood shavings before positioning the lock body back onto the surface.
Stage 3: Body Mounting and Alignment
Fasten the main lock case securely to the door face using suitable wood screws. Insert your rim lock spindle and fit compatible rim knobs, ensuring the latch mechanism moves smoothly without binding against the timber boreholes or handle escutcheons.
Stage 4: Fitting the Box Keep
Close the door and mark the exact positions of the latch and deadbolt onto the door frame. Align the matching surface keep with the lock body, checking that the latch catches cleanly and the deadbolt throws smoothly into the box keep without catching on the frame.
Technical Specifications
Below are the practical dimensions and specifications for the Asec AS10527 narrow rim lock.
| Specification | Rating or Standard | Practical Details |
|---|---|---|
| Manufacturer | Asec Security Hardware | Established UK architectural hardware brand |
| Product Code | AS10527 | Specific narrow profile rim lock reference |
| Case Width | 140mm | Compact horizontal profile for slim timber door stiles |
| Case Height | 76mm | Narrow vertical height providing clean architectural proportions |
| Finish | Black Japanned | Traditional protective lacquer finish for authentic heritage style |
| Mounting Style | Surface-Mounted Rim | Fixes directly to the face of timber doors without deep morticing |
| Operation Mechanism | Dual Action Latch & Deadbolt | Spring latch for rim knobs with separate keyed deadbolt |
| Door Compatibility | Timber Doors | Ideal for internal doors, cottage doors, and light exterior gates |
Frequently Asked Questions
What are the main advantages of a narrow rim lock over a standard rim lock?
A narrow rim lock features a reduced height and width, making it specifically suited for panelled doors, ledged and braced doors, or doors with slim vertical stiles. Standard rim locks can often look oversized or physically clash with decorative moulding, whereas this compact 140mm by 76mm case provides a discreet, proportionate fit.
What kind of door handles should I use with this lock?
You should pair this unit with dedicated rim lock knob furniture. Rim knobs are designed so that the knob on the lock side sits flush against the lock case follower, while the opposite knob fits against an escutcheon rose on the external face of the door.
Can this lock be used on both left-hand and right-hand doors?
Rim locks are handed based on the direction the door opens and the bevel of the latch bolt. Before fitting, check your door handing to ensure the latch bevel faces towards the frame keep when closing so it latches smoothly shut without obstruction.
How do I maintain the black japanned finish?
The black japanned coating is hard-wearing and simple to maintain. Simply wipe the surface clean with a dry, soft cloth periodically to remove dust. A light application of light machine oil on the internal moving latch parts once a year keeps the mechanical action running smoothly.
Need Expert Advice on Your Door Hardware Project?
Whether you are sourcing authentic ironmongery for a single cottage door or outfitting an entire property development, our experienced team at Doorfit is here to guide your hardware specification.
Contact Our TeamSpecification
| Manufacturer | Asec |
|---|---|
| Finish | Black Japanned |
| Dimensions | 140mm X 76mm |