Key snapped in the lock: what to do
Last reviewed 2 October 2026 by the Swansea Locksmith Quotes team
The short answer
If part of the key is sticking out, you may be able to grip it with thin pliers and pull it straight out without turning. If it has broken off flush inside the cylinder, stop: pushing or glueing makes extraction harder and often means replacing the cylinder. A locksmith can usually extract the piece and, if the lock is worn, fit a new cylinder on the same visit.
Step by step
- Do not try to turn the lock with the broken stub. That can jam the cylinder.
- If a piece is visible, grip it with thin needle-nose pliers and pull straight out, gently.
- Never use superglue on the broken piece. It bonds the key to the pins.
- Keep the other half of the key. It helps the locksmith identify the lock and cut a replacement.
- If the door is now insecure (it will not lock), say so in your request so providers know it is urgent.
Why keys snap
Keys usually break because the cylinder is worn, the door has dropped so the lock is under strain, or the key itself is worn thin. If the door was hard to lock before, ask for the door alignment to be checked as well as the key removed.
Extraction or a new cylinder?
A clean extraction is often quick. If the cylinder is damaged or worn, replacing it with a better-rated one can make sense while the locksmith is there. Ask for both prices in the quote so you can choose.
When to get help
If the door cannot be locked and you need to leave, treat it as urgent and request quotes now.
General guidance only. If anyone is in danger, or you smell gas, call the emergency services first.