What is the difference between a master key and a regular key?

How is a master key different from a normal key?

The change key can only open it one way (with the shear line above the pins) while the master key can open it both ways (shear lines above and below the pins). And that's how a master key works.

What makes a key a master key?

Master key system is a system that allows two or more keys to open one lock. Master keys will be able to open multiple locks. The greater the difference between the master key and the change key, the more master wafers will be needed. The more master wafers, the more possible keys can open the lock.

Do master locks use the same key?

Each lock is opened by its own unique key that does not open any other lock in the set. Keyed Different is the standard keying default on Master Lock and American Lock padlocks.

Can master keys be copied?

Master Key Systems Are Created on Restricted Keyways Restricted keyways are patented, which means that they can't be sold on the open market and can't be copied at a hardware store or commercial location. Instead, master keys can only be copied with your authorization by your key provider.