Why Keys Snap and What It Means for Your Lock
Keys fail for predictable reasons: metal fatigue from years of daily use, a lock cylinder that has become stiff due to dirt, corrosion, or lack of lubrication, or an overly forceful turn when the plug is not fully aligned. High-security mortise lock cylinders found on many Columbia commercial and older residential properties are especially unforgiving — their deeper plug chambers can grip a broken fragment tightly, making amateur removal attempts genuinely risky. Forcing the cylinder or attempting to dig out the fragment with improvised tools like bobby pins or tweezers can push the piece further in, score the cylinder walls, or crack the plug entirely, turning a straightforward extraction into a full lock replacement.
Understanding what happened to your key also guides the solution. A key that snapped cleanly at the bow (the part you grip) is usually straightforward to extract. A key that sheared mid-blade inside a mortise lock mechanism, a door knob lock, or a vehicle ignition requires different tooling and a careful approach to avoid compressing the fragment against the wafer or pin stacks. Our technicians assess the break point, the lock type, and the cylinder condition before selecting the right hook pick, extractor spiral, or needle-nose technique — always aiming for a damage-free outcome.