the V10 Universal Rim Cylinder KA31 is the definitive security solution for multi-point access control. In the professional locksmithing industry, the “KA31” designation represents a specific Keyed Alike suite. While standard “Keyed to Differ” (KTD) locks require a unique key for every door, a KA31 system allows a single high-security key to operate multiple rim locks—such as the front entrance, side gate, and rear garage—without sacrificing the elite protection of a 10-pin dual-row mechanism.

By utilizing a universal 32mm diameter housing and a modular replacement design, the V10 Universal Rim Cylinder KA31 serves as a high-performance retrofit for almost any standard night latch (Yale-style), streamlining property management while providing industrial-grade resistance to picking, bumping, and drilling.

The V10 Universal Rim Cylinder KA31 is engineered for “One Key” convenience, a critical requirement for residential estates, small business complexes, and landlords managing multi-occupancy properties.

Streamlined Access Control: The KA31 suite eliminates “key clutter.” By installing identical V10 Universal Rim Cylinder KA31 across all perimeter doors, users no longer need to search through a heavy key ring. This is particularly beneficial for emergency services or facility managers who require rapid access to various parts of a building.
10-Pin High-Precision Security: Despite the shared keyway, the internal security is world-class. The V10 mechanism utilizes two rows of five high-precision pins. This creates a staggered “shear line” that is virtually immune to traditional picking tools and kinetic “bumping” attacks that easily bypass standard 5-pin locks.
Hardened Anti-Drill & Anti-Snap Protection: The face of the KA31 is reinforced with hardened steel pins and ceramic inserts. These are strategically positioned to deflect high-speed drill bits, protecting the internal pin chambers. Furthermore, the solid brass body is designed with a reinforced core to resist “snapping” attacks.
Universal “Snap-Off” Tailbar: To accommodate varying door thicknesses (from standard 35mm to heavy-duty 54mm fire-rated entrance doors), the rear metal tailbar is pre-notched. This allows the installer to “snap” the bar to the exact length required to engage the internal night latch, ensuring a perfect mechanical bond.

Performance Grading and Material Integrity

Since a rim cylinder is the primary line of defense and is constantly exposed to the elements, the V10 Universal Rim Cylinder KA31 is built to exceed standard residential requirements.

BS EN 1303 Grade 6: The V10 KA31 is tested to the highest European level of durability and security for cylinder locks, ensuring it can withstand over 100,000 cycles of operation while maintaining its security integrity.
Solid Brass Core: Brass is the preferred material for high-traffic lock cores because of its natural “self-lubricating” properties and resistance to friction wear, ensuring the key slides in smoothly even after years of use.
Restricted Key Duplication: Each KA31 suite is supplied with a Security Code Card. Because the V10 key profile is high-precision and restricted, duplicates cannot be made at standard high-street shops, ensuring the property owner maintains total control over key distribution.

Technical Specifications of V10 Universal Rim Cylinder KA31

Feature	Detailed Specification
Keying Configuration	Keyed Alike (KA31 Suite)
Housing Diameter	32mm (Industry Universal Standard)
Internal Mechanism	10-Pin Dual-Row (2×5 Configuration)
Security Standards	EN 1303 Grade 6 / Anti-Pick / Anti-Drill
Tailbar Type	Pre-notched Snap-off (Adjustable length)
Compatibility	Fits all standard Night Latches (Yale, Union, ERA, etc.)
Supplied Accessories	Mounting Plate, 2x M5 Break-off Screws, 2-3 Keys

Recommended Professional Finishes

For modern residential entrances, the offers a sleek, industrial aesthetic with maximum resistance to salt-air corrosion. V10 Universal Rim Cylinder KA31 is the ideal choice for coastal properties or urban environments where durability is as important as style.

Satin Chrome V10 KA31 Cylinder

For heritage properties or traditional timber doors, the maintains a classic “kerb appeal” without compromising on 10-pin security. The high-quality brass finish is lacquered to resist tarnishing while protecting the precision-engineered core.

Polished Brass V10 KA31 Cylinder

Installation Pro-Tip: The “Master Alignment”

When installing multiple V10 Universal Rim Cylinder KA31 across a property, consistency is key to a professional finish:

Insert the KA31 into the door and secure the mounting plate loosely first.
Slide the night latch over the tailbar. If the tailbar is too long and prevents the latch from sitting flush, snap it at the nearest notch using two pairs of pliers.
The Smooth-Turn Test: Insert the key and turn it. If you feel any “binding” or resistance, slightly shift the cylinder’s position before tightening the M5 screws.
Once the movement is effortless, tighten the screws fully. This prevents “loading” the 10-pin mechanism, ensuring that all your locks feel identical and the key doesn’t wear down unevenly over time.

Simplify access management with the V10 Universal Rim Cylinder KA31, designed for smooth operation and convenient keying. This cylinder allows multiple locks to be operated by the same key, reducing the need for multiple keys while maintaining secure locking for doors. Its universal design ensures compatibility with a wide range of doors, making it ideal for residential, commercial, and multi-unit properties.

Crafted from premium-quality materials, the V10 Universal Rim Cylinder KA31 provides excellent resistance to tampering, forced entry, and daily wear, ensuring long-lasting durability. The keyed alike system simplifies access across multiple doors without compromising security, making it perfect for offices, homes, and multi-door installations. Easy to install and built for consistent use, this cylinder lock combines strength, convenience, and reliable protection.