Skip to content

How to Key Your Door Locks the Same

This article is a collaborative effort, crafted and edited by a team of dedicated professionals.

Contributors: Muhammad Baballe Ahmad, Mehmet Cavas, Sudhir Chitnis, and Zhen-ya Liu.

✓ Verified & Tested Information

You can easily key all your door locks to the same key, allowing you to Bypass the Lock with just one key for all your doors. Doing this is simple and straightforward!



Re-keying your door locks is an important part of home security. Whether you’re just moving into a new home, or need to change the locks for any other reason, it’s a good idea to key all of your door locks to the same key. By doing this, you’ll be able to use the same key for every door, which makes life much easier. Before you begin re-keying your locks, there are a few important steps to take in order to ensure success.


Gather the necessary materials


In order to key all your door locks the same, you will need a few materials. First, you’ll need new locks that accept the same key. Depending on what type of door lock you want, such as deadbolt or knob style, there will be a variety of different locks to choose from. Make sure to purchase the same brand lock so they can key the same. Also, it would be beneficial to get small (sometimes hidden) locks in case your store doesn’t have them pre-keyed alike.

Second, you’ll need to gather a few tools such as a screwdriver set, hammer and chisel (if rekeying). Finally, if you are rekeying your current locks or installing new ones that aren’t pre-keyed alike, then you will also require an internal re-pinning kit which usually comes with instructions for learning how to rekey these specific locking mechanisms. Once these tools and materials are acquired for the job then you will be ready to start keying your doors the same easily and confidently!


Measure the door and the locks


Before switching all of the locks in your home to the same key, you will need to measure the doors and door locks. Door thickness can vary widely and you must purchase a new front door lock with a mortise cylinder that will fit inside the thickness of your door. For internal door locks, measure for either a 5 or 6 pin cylinder. The measurements should include the length of the actual cylinder from end to end including its tailpiece, as well as its diameter. Additionally, measuring for projected parts such as backset and latch should also be factored in when making any hardware replacement purchases. Once these measurements have been obtained, record them accurately so that you can shop for compatible hardware more efficiently when actually purchasing the new locks.


Removing the Old Locks


If you’d like to key your door locks the same, the first step is to remove the old locks. This process can vary depending on the type of locks you’re using and the age of the system. However, the general process involves using a door knob removal tool, a Phillips-head screwdriver and a flat-head screwdriver. Once the locks have been removed, you can begin the process of keying them the same.


Remove the old locks from the door


Removing the old locks from a door is a necessary step in the process of key your door locks the same. To do this, you will need a Phillips screwdriver, a hammer and a nail set, or pliers. Start by unscrewing the screws around the faceplate and latch plate of the lock. Once these are fully disconnected, you can then remove any remaining components from the door such as strike plates, face plates and spindles. With these items removed, you will next want to remove any exposed nails or pins that may be in the way of removing the old lock itself. If these items cannot be easily removed with a hammer and nail set or pliers, then an industrial drill can be used to bore them out safely. Once all of these items are cleared away, gently wiggle and pull outwards on the deadbolt until it’s free from its anchor in let into door jamb. Once free from its anchor hole and all components removed, you should now have successfully removed your old locks from your door!


Measure the old locks to determine the size of the new locks


Before you start changing out the locks, measure the old ones to get a sense of their size. You’ll need to use these measurements in order to purchase the right size and type of new locks. Knowing the backset measurement is especially important, as this determines the distance between where the lock and handle are on a door. Additionally, understanding whether your door locks use a cylindrical or mortise type of design is also important when buying new locks.

Once equipped with these measurements, you’ll be able to buy compatibility lock sets that can be easily installed in place of your existing locks. If you’re having trouble deciding which style will best suit your needs or if you’re not familiar with lock terminology, it might be best to bring your old locks with you when purchasing replacements so that you can get reliable guidance from an experienced home improvement specialist.


Installing the New Locks


Rekeying your door locks is a simple process that can provide you with a new set of keys for your door locks. It is a great way to make sure that only people with new keys can have access to your home. Installing new locks is an essential part of rekeying your locks, so let’s take a look at the process and how to do it.


Install the new locks on the door

Replacing door locks can be a great way to upgrade your home security. To ensure that all of your locks use the same key, it’s important to purchase compatible locks. To get started, here are the basic steps you should take to install the new Deadbolt Lock on your door:

1. Determine the type of lock you need: The two most common types of locks are deadbolt and knob/lever lock sets. It’s important to choose a Deadbolt Lock that offers the degree of security you require and is compatible with all other locks in your home.

2. Prepare for installation: Make sure that you have all of the right tools for installation, including an electric drill, screws, a drill bit (if needed), and a screwdriver or hex wrench (depending on which fasteners come with your new door lock).

3. Remove old hardware: If possible, it may be beneficial to first remove the existing hardware from the door before installing any new hardware. This will give you easy access to make any needed hole or latch adjustments before installing your Deadbolt Lock.

4. Mark where holes will be drilled: Be sure to measure twice-to make sure that everything lines up correctly during installation-and mark any holes that need drilling with a pencil or marker (on both sides of the door). Keep in mind that Deadbolt Lock installations may require an additional hole in either side of the casing near ground level for sliding bolts into place inside/outside jambs when locked/unlocked from either side of doorway entrance.)

5. Drill holes: Using an electric drill equipped with appropriate bit(s) size ready for drilling into higher-end doors including aluminum framing materials; otherwise consider using traditional manual methods such as hand drillsfor softer flat surfaces like composite doors plus lower-grade household wood door casings many times found in homes seeing age plus wear & tear over time).

Make sure the locks are aligned correctly


In order to ensure that your new locks match the existing ones, you will need to make sure that the deadbolts are aligned correctly on both sets of locks. Installing the locks incorrectly could cause binding and jamming when using multiple keys in close proximity.

Start by checking that each of the pins are properly aligned. When inserting a key into the cylinder, you should be able to comfortably rotate it clockwise and counterclockwise without any resistance or binding. If any pins are out of alignment, use an adjustable wrench to move them until they align properly with the cylinder and spring assembly.

Finally, check that the lock cylinder is functioning correctly by gently pushing down on it before locking or unlocking with a key. There should be slight resistance as the pins move up and down within the lock’s cylindrical chamber. If there is no resistance when inserting a key, then it may not be able to ride up over all of the pins within the assembly when attempting to turn them clockwise or counterclockwise – thus preventing a successful unlock or lock action.


Key the New Locks


Key your door locks the same to make it easier to keep track of your keys and provide a more secure home. Doing this gives you the convenience of having one set of keys to open both locks, and it also helps you to avoid the expense of having to buy two sets of keys. In this article, we’ll provide step-by-step instructions on how to key your door locks the same.


Cut the new keys


The key cutting process is relatively straightforward, though it does require some precision. You’ll need to start by removing the lock cylinder from the door or other lock unit to access the key code for your new keys. Once you have your new keys cut to match the old ones, you can install them in your door locks. Here is a step-by-step guide to keying your new locks:

1. Purchase your replacement keys from a reputable hardware store or locksmith. Make sure they are cut to match the existing key code in order for them to work with the same keyway.
2. To remove the cylinder, locate and turn out any screws that are holding it in place and then lift it away from the housing unit of the lock. This will allow you to access the tumbler inside that controls which way each individual pin needs to be set in order for a specific key code combination to turn the cylinder and unlock your door or other item.
3. Once you’ve identified which pins will need replacing, use an awl or pocket knife to carefully unscrew and remove them from their housings within the cylinder itself.
4. Take your replacements keys and insert them into a manual or electric key cutter machine as directed on its instructions (or as prescribed by a professional locksmith). Note: if you do not have any pinning tools available, bring along this cylinder with all its pins still inserted into it when visiting a local locksmith – they should be able to handle pinning tools more appropriately than regular customers!


Insert the keys into the locks and turn to test


Once the C-clamp and drill bit are in place, insert both keys into the locks with their grooved side facing out. Be sure to fully depress the plug or cylinder into the bottom of the lock. Then slowly turn one key clockwise and then counterclockwise until you feel a small click. Test both keys several times in case there was a discrepancy in cutting. This helps identify any errors so that you do not have to start the process over with a new blank or re-cut existing key. If all tests come out clean, your door locks should now be on the same key!

This process can be used for other cylinder locks as well, such as filing cabinets and padlocks. Remember to take extra caution when keying similar locks together to ensure they are all set on the same depth bits and universal cuts, otherwise your key may not work properly in any of them.


Finishing Up


Rekeying your door locks can be a great way to increase the security of your home. After installing the new key cores, you’ll need to finish the job by adjusting the pins and cylinders. This is the final step in rekeying and when it’s done correctly, it ensures that only the correct key will be able to open the lock. Let’s take a look at the process of key your lock and how you can make sure it’s done properly.


Replace the screws and secure the locks


After you have installed the locks and ensured they are properly keyed to the same key, it is time to frost up any remaining screws and securely fasten each lock in place. Start by carefully screwing the screws into their designated holes. If screws are too loose, add a small amount of wood glue to ensure they stay firmly in place. Once all screws are in securely, give each lock a gentle tug back and forth before replacing the door knob on each side. When replacing any door knobs, check that there is no sign of wear on any locking mechanisms. If necessary, replace the door knob with one that looks the same but functions better or is more secure. Finally, test your new locks to ensure that both sides can be properly locked with a single key and make sure each doorknob turns freely without sticking or jamming .


Test the locks to make sure they are secure


After you have finished key your door locks the same, it is important to test the locks before using them. To ensure that the locks are secure and will keep your property safe, you should test each lock by trying to pick it, jiggle it to check for any weaknesses or anomalies, and check the fit of the lock. If you find that there are any issues with the lock, such as a loose fit or difficulty picking it, then you should replace it with a new one before using it. Additionally, if your locks have been re-keyed by a professional locksmith then they may have added security pins to further reduce chances of unauthorized entry. Test these extra pins by inserting them into each side of the lock after keying and make sure they do not interfere with proper operation.

How to Key Your Door Locks the SameCheckout this video:

Share this Article