AQ81CP 102mm Surface Bolt Polished Chrome
In stock
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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Description
Reliable Secondary Security with the AQ81CP 102mm Surface Bolt Polished Chrome
Securing internal doors, utility rooms, cupboards, and external French door pairs often presents a tricky challenge for homeowners and property managers. Standard tubular mortice latches can leave gaps in stability, while loose, poorly made barrel bolts can easily rattle free, drop open unexpectedly, or sheer under gentle force. When doors warp slightly over seasonal changes or see regular daily use, maintaining positive latching requires physical hardware that stays firmly in place, protects your privacy, and resists unwanted intrusion.
The AQ81CP 102mm Surface Bolt Polished Chrome delivers a heavy-duty, dependable solution designed to overcome these common latching problems. Built with a solid flat sliding barrel profile, this hardware offers considerably more physical shear resistance than conventional rounded bolts. The internal ball and spring mechanism provides firm tension across every movement, so the bolt stays firmly retracted when you open the doorway and locks neatly into position when secured.
Manufactured to rigorous standards and finished in a mirror polished chrome, this compact 102mm surface fitting matches modern architectural door handles while standing up to high footfall demands. Whether you need to stabilise the inactive leaf of a patio door or secure a quiet bathroom space, this bolt brings together dependable strength, effortless fitting, and long-lasting mechanical assurance backed by a 10 year guarantee.
Engineered Hardware Built for Performance
Internal Ball and Spring Mechanism
One of the primary frustrations with low-grade surface bolts is gravity drop, where vertical fitting causes the barrel to slide down accidentally. This unit features an internal steel ball and spring detent that grips the sliding barrel. It delivers a positive click on closure and holds fast against unintentional movement, vibration, and rattling.
Heavy Duty Flat Sliding Barrel
Rather than using a thin round rod, this bolt incorporates a solid flat profile slide. This broader cross-section distributes forced entry leverage evenly across the frame plate, providing substantial physical resistance and preventing the bar from bending or warping under pressure.
Versatile Dual Keep Options
Door frames come in varied shapes, depths, and alignments. To save you time during installation, each unit includes alternative strike plates designed to accommodate both inward and outward swinging leaves. This flexibility ensures smooth engagement whether mounted flush or into a recessed door jamb.
Resilient Polished Chrome Finish
The exterior layer is electroplated in bright polished chrome, producing a reflective mirror sheen that lifts contemporary interiors. The tough plating resists tarnishing, fingerprints, and bathroom humidity, ensuring your architectural fittings remain pristine over decades of service.
Step by Step Installation and Setup Guide
Stage 1 Alignment and Marking
Position the main body flat against the face of your door leaf at your chosen operating height. Use a spirit level to ensure the unit sits perpendicular to the edge, then mark your screw mounting pilot holes with a soft pencil.
Stage 2 Pilot Drilling
Pre-drill shallow pilot holes into the timber using a fine wood drill bit. This step prevents natural timber splitting, preserves wood grain integrity, and ensures the provided fixing screws drive directly home without stripping their heads.
Stage 3 Main Body Mounting
Secure the bolt housing using the matching chrome screws provided in the pack. Drive the fixings in by hand with a properly sized screwdriver to avoid tool slippage across the high-shine polished face plate.
Stage 4 Strike Plate Selection and Fitting
Select the universal flat plate or angled staple strike best suited for your door swing. Throw the bolt fully across the gap, mark the frame location, and screw the keep in place, checking for free throw movement.
Technical Specifications
| Specification | Rating or Standard | Practical Details |
|---|---|---|
| Product Model | AQ81CP | Standard architectural pattern surface bolt |
| Bolt Length | 102mm Overall Body | Compact 4 inch footprint for residential and commercial joinery |
| Bolt Width | 36mm Plate Width | Slimline design suited for standard door stiles and narrow mullions |
| Bolt Throw | 25mm Extension | Generous one inch engagement into frame keeps for firm holding |
| Internal Mechanism | Ball and Spring Assisted | Resists drop down when mounted vertically and stops rattle |
| Finish | Polished Chrome Electroplate | High reflective gloss matching contemporary ironmongery |
| Supplied Fasteners | Wood Screws Included | Matching chrome finish screws supplied in each individual retail pack |
| Mechanical Warranty | 10 Year Mechanical Guarantee | Guaranteed against mechanical failure under ordinary working use |
Care and Ongoing Maintenance
Maintaining the flawless appearance and silky smooth mechanical action of your AQ81CP 102mm Surface Bolt Polished Chrome is simple and hassle free. Because polished chrome forms a hard non-porous exterior, it does not require aggressive scrubbing or harsh chemical cleaners. Using abrasive cleaning agents, steel wool, or acid-based sprays will scratch the surface layer and compromise the protective coating.
For routine upkeep, simply wipe down the bolt, plate, and keep using a dry microfibre cloth or a soft cloth moistened with mild warm soapy water. Dry the surface thoroughly afterwards to avoid surface water spotting. We recommend applying a light coat of high-grade non-abrasive wax polish periodically. This simple ritual forms a thin invisible barrier against airborne dust, grease, and moisture while lubricating the internal guide tracks for effortless gliding year after year.
Need Advice on Your Project Hardware?
If you are unsure whether this 102mm surface bolt is the ideal size, throw, or layout for your timber doors, our experienced ironmongery specialists are here to guide you through your options.
Contact Our TeamSpecification
| Manufacturer | Carlisle Brass |
|---|---|
| Finish | Polished Chrome |
| Dimensions | 102mm |
| Guarantee | 10 Year (Mechanical) |

