What to Do If Your Key Breaks Off in the Lock

Why Keys Break in Locks

Keys break in locks more often than people expect. The most common causes are: using a worn or previously bent key, attempting to force a lock that's sticking, using a key as a lever for something other than its intended purpose, and cold weather making metal more brittle. The result is a key that snaps off — often with part of it stuck deep in the lock cylinder.

What NOT to Do

When you're frustrated and stressed, it's tempting to try various DIY extraction methods. Here's what to avoid:

• Don't push the key further in: This will make extraction significantly harder
• Don't try to use a screwdriver or knife: These can damage the internal pins and may make the lock permanently non-functional
• Don't try super glue: This is a popular internet tip that almost never works and often makes the situation much worse by gluing the key to the cylinder
• Don't try to drill the lock yourself: Without the right drill bits and technique, you'll destroy the lock cylinder entirely

Professional DIY Options (If You're Handy)

If the key broke off with a portion visible outside the cylinder, a broken key extractor tool (available at hardware stores) can sometimes work. The hook on the extractor catches the key's bitting and allows you to pull it straight out while the cylinder is in the unlocked position.

When to Call a Locksmith

If any significant portion of the key is inside the cylinder, or if the DIY extractor doesn't work on the first attempt, call a professional. Provo Locksmith UT technicians carry professional-grade extraction tools and can remove broken keys without damaging most locks. Call (385) 283-6134 for same-day service.

After Extraction: What Comes Next?

Once the key is extracted, the lock cylinder should be inspected for damage. You'll need a new key cut — and if the original key was worn down to the point of breaking, it's worth having the remaining keys inspected as well.