What Is Keying & How Does It Work?
Answering all of your keying questions.
Whether you're replacing locks or making spare keys, knowing what keying is and how it works can help you find the right option for your home. Our guide covers all you need to know about keying, including tips on choosing the type to suit your needs.
What Is Keying & How Does It Work?
Types of Keying
Types of Keyed Products
What Is Keying & How Does It Work?
"Keying" refers to the way in which keys are used to operate locks. The key is inserted into the cylindrical mechanism that holds a set of pins. Most locks have five to seven pins that range in height to make a varied "combination" that matches the grooves in a key. When you insert the key, the grooves will push the pins up to create a "shear line" that allows you to turn the tailpiece on the other end to lock or unlock the mechanism.
Types of Keying
Before buying a new lock, you'll want to consider how you want it to be keyed. There are two main types of keying: “keyed alike” and “keyed different”. Both have their benefits, so it's best to think about your specific needs.
Keyed Alike
Locks that are “keyed alike” (KA) allow you to operate different locks with the same key. This is great for spaces where it'd be simpler and save time to use one key for different locks, such as the front and back door. Plus, these locks can allow you to match an existing key if you add the five digit code.
Keyed Different
Locks that are “keyed different” (KD) means you only have one key for one lock, making each lock different from one another. This type of keying is best for rooms that you'd like to limit access to, whether at home or at work.
You should also consider which type of keyed lock works best for your home.
Entry Sets: Entry sets include the key pieces of hardware for exterior doors, such as a door handle, a lever or knob, a deadbolt, and a key.
Door Knobs: Some door knob designs can be locked and unlocked with keys. This provides the proper protection for exterior doors and extra privacy for interior doors.
Door Levers: Similar to door knobs, some levers feature a keyed lock.
Deadbolts: Deadbolts are typically added to exterior doors for enhanced protection. Find more information by reading our guide What is a Deadbolt?
Smart & Electronic Door Locks: Though smart and electronic door locks are operated through Bluetooth connections or designated apps, they can still be locked and unlocked manually with keys.
Tip!
Learn more about these types of door hardware with our guide The Best Types of Door Locks & Door Knobs for Your Home.
