Interchangeable core is a type of keying mechanism within a lock cylinder that can be easily replaced without the need to disassemble the entire lock. This design enables swift rekeying by authorised individuals, facilitating security management especially in environments requiring frequent changes, such as businesses with high employee turnover. The cores are standardised in size and shape, allowing them to fit into different brands of locks that support this system.
The core contains its own set of pins and springs, which can be altered or exchanged by removing it from the lock housing with a special control key. This unique feature distinguishes it from traditional lock cylinders, which require complete disassembly for pin configuration changes. The ability to quickly shift cores enhances operational efficiency and security control, reducing downtime and maintenance costs. Interchangeable cores are commonly used in institutional settings, where master key systems are prevalent, enabling a single key to open multiple locks with different individual keys assigned per lock. This system's adaptability makes it an advantageous solution for complex key management scenarios.