Broken key extractor is a specialised tool designed for the removal of snapped or broken keys from lock cylinders. This device is crucial in locksmithing and security maintenance, where it allows for the retrieval of key fragments without damaging the lock mechanism. The tool typically consists of small, precise hooks or spiral needles that latch onto the broken key pieces, enabling their extraction.
The design of a broken key extractor varies to accommodate different types of locks, including pin tumbler locks, wafer locks, and disk detainer locks. Constructed from robust materials such as stainless steel or hardened plastic, these tools must possess the strength to exert necessary force without bending or breaking. Effective use of a broken key extractor requires skill and understanding of lock mechanics, as improper use can further damage the lock or jam the key fragments more deeply within the cylinder.
In addition to their practical application, broken key extractors are also studied in forensic locksmithing. Their usage can provide insights into the circumstances leading to a key's breakage, which might include material fatigue, attempted unauthorised entry, or user error. This analysis can aid in improving lock design or in forensic investigations where access patterns are scrutinised.