How Lock Rekeying Works, Step by Step

Master Key Systems

Rekeying changes which key opens a lock without replacing the lock. This is what the locksmith is doing.

Step-by-step guide

  1. The cylinder comes out The lock is taken off the door and the cylinder removed from its housing.
  2. The plug is removed Using the current key and a follower tool, the plug slides out while the springs and top pins stay in place.
  3. The bottom pins are swapped Each chamber gets a new pin sized to match the cuts of the new key.
  4. The plug goes back With the new key in, every pin sits flush, and the plug slides back in.
  5. Old keys stop working The lock is tested and refitted. The old key no longer turns, and all your locks can share the new one.

When to call a locksmith

If the steps above do not solve it, or you would rather not do it yourself, see Lock Rekeying or browse more how-to guides.

Rather have it done for you? Mobile Locksmith DC is open 24/7 with a 15–25 minute response anywhere in Washington, DC. Call (240) 202-2249.

Locked out or need a locksmith now?

A technician can be at your door anywhere in Washington, DC in 15–25 minutes, any hour of the day or night.

📞 Call (240) 202-2249