Broken Key Stuck in Lock — How to Remove It Without Destroying the Lock

A key snapping off in the lock feels catastrophic but it's usually one of the easiest locksmith jobs we do. The most important thing is stopping yourself from making it worse in the first 2 minutes.

Here's what to do — and what to absolutely avoid.

STOP doing these things right now

If you just had the key snap off, your instinct is to grab the broken piece and try to pull it out. Don't. The three things that turn a $75 extraction into a $200+ lock replacement:

1. Pushing the broken piece deeper — happens when you try to use the other half of the key to "unlock" first. The broken half jams further inside.
2. Forcing the lock to turn — some people try to turn the lock with the broken key piece still inside. Damages the pins.
3. Squirting WD-40 in — sounds helpful, makes it worse. The broken metal piece needs friction to grip; WD-40 turns the lock cylinder into a slippery mess.
4. Trying to glue the two halves together with super glue — please don't. We see this twice a year and it always means full lock replacement.

Take a breath. Don't touch it for a minute. Then read on.

The 3 DIY methods that actually work

If you can see at least a millimeter of the broken key sticking out of the lock, you have a real chance of getting it out yourself. In order from easiest:

Method 1: Tweezers

Works when the broken piece sticks out far enough to grip.

• Use needle-nose tweezers, not the eyebrow kind (too thick).
• Grip the protruding part. Pull straight out — don't twist or wiggle.
• If it doesn't come out with steady pressure, stop. Don't yank — you might break it off flush with the lock face.

Success rate: 60% when the piece sticks out 2mm+

Method 2: A jigsaw blade or hacksaw blade

For when the broken piece is mostly inside.

• Slide a thin hacksaw blade (broken off a regular hacksaw works) into the keyway, teeth facing the broken key.
• Push it in past the broken piece, then pull out — the teeth catch on the key and drag it out.
• Works best on standard pin-and-tumbler locks. Won't work on high-security or smart locks.

Success rate: 40%. Higher if you have a real key extractor tool, but those are $20+ and useful only once.

Method 3: Super glue + a thin piece of plastic

Risky — only if methods 1 and 2 failed.

• Find a stiff piece of plastic (cut from a credit card or food packaging) about the same width as the keyway.
• Put a tiny drop of super glue on one end.
• Press it firmly against the visible part of the broken key. Hold 60 seconds.
• Carefully pull straight out.

Why risky: if glue gets into the lock pins, the entire lock is ruined. Use the smallest amount of glue possible.

Success rate: 30%. Higher risk if it fails.

When to stop and call

You should stop trying DIY and call us if any of these are true:

• No part of the key is visible (broken flush or below the lock face)
• It's an automotive ignition — getting it wrong can mean a $400+ ignition replacement
• You tried once and the piece moved further in
• It's a high-security lock (Medeco, Mul-T-Lock, ASSA) — these have anti-pick features that DIY methods will damage
• You need to be inside the house in the next 30 minutes — don't waste time fighting it

What a professional broken key extraction looks like

We use purpose-built extractor tools — thin tempered steel hooks designed to catch a broken key without damaging the lock. The full extraction usually takes:

• 5–10 minutes if the break is in a standard residential lock
• 15–25 minutes if the break is in an automotive ignition (harder access)
• 15–20 minutes if the lock also needs to be opened (we open it, extract, then make you a new key)

After extraction, we test the lock with a known-good key. If your lock is fine, we leave. If it's damaged, we'll quote you for repair or replacement on the spot.

Cost

Scenario	Cost
Residential broken key — extraction only	$75
Residential broken key — extraction + new key cut	$95–$120
Car ignition broken key — extraction only	$95
Car ignition broken key — extraction + new transponder key	$200–$300
Broken key with damaged lock (need new lock too)	$150–$250

A quick prevention note

The #1 cause of broken keys is forcing a worn key in a worn lock. If your key has been getting harder to turn over the last few months, it's a warning sign — both the key and the lock are wearing out.

A $25-per-cylinder rekey now is way cheaper than the $200+ broken-key call later.

If you're standing at the lock right now

Call (336) 790-2233 — we're 24/7 across the Charlotte metro and Lake Norman area. Quote on the phone, on-site in 15–30 min.

See broken key extraction service for more.