Keys usually snap at the narrow neck where the blade meets the head, often after years of wear or on a cold morning when the lock is stiff. How you respond in the next few minutes decides whether this is a quick fix or a new lock.
First, stop turning
Do not try to turn the lock with the remaining piece or push anything into the keyway. That can drive the fragment deeper or damage the pins.
What you can safely try
- If part of the blade sticks out, grip it with fine needle-nose pliers and pull straight out, without twisting.
- If the lock was turned when the key broke, return it to the vertical position only if you can do so without force.
What not to do
- Superglue on a matching piece: glue can run into the cylinder and ruin it.
- Hairpins or small screwdrivers: they push the fragment further in.
- Lubricant sprays: they can make the fragment harder to grip.
How a locksmith does it
Technicians use thin extraction tools that slide alongside the fragment, hook into its cuts and draw it out. Usually the lock survives. If the pins are damaged or the lock is badly worn, the cylinder may be replaced or rekeyed at the same visit.
Why it happened
Keys that snap are often worn copies of copies, or turning in a stiff lock. A serviced lock and a rekey with fresh keys supplied prevent a repeat.
In Toronto, we handle broken keys 24/7: emergency locksmith.
Why stopping matters
Once a key breaks, further turning or forcing can push the piece deeper or damage the pins. Do not try to pull it out with pliers unless a piece is clearly sticking out and can be gripped without twisting.
What may be safe to try
If a portion of the key is visible, a fine pair of tweezers or needle-nose pliers may pull it straight out. Do not use glue, and do not insert other metal objects.
When to call
If the piece is inside the cylinder, a technician can use extractor tools. Ask whether the cylinder will be reused, and have proof of authority ready. See rekeying versus replacing for what to do next.