Understanding Kwikset Lock Rekeying Basics
Rekeying a Kwikset lock means changing the internal pins so that your old key no longer works, and a new key you choose will operate the lock instead. This is different from replacing the entire lock. When you rekey, you keep the same lock mechanism on your door, but you alter what's inside so different keys will turn it. Kwikset manufactures millions of residential locks used across North America, making this information relevant to many homeowners.
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The main reason people rekey locks is security. If you've moved into a new home and don't know who has copies of the previous owner's keys, rekeying prevents unauthorized entry. Other situations include losing keys, changing locks after a tenant moves out, or rekeying after a break-in. Rather than replacing an entire lock that costs $50 to $150, rekeying typically costs $15 to $30 in materials when doing it yourself.
Kwikset offers rekeying kits specifically designed for their locks. These kits contain new pins in different configurations, a tool to remove the cylinder, and instructions. The process takes about 30 minutes to an hour once you understand the steps. Most standard Kwikset residential locks can be rekeyed at home without special training or certification.
One important note: rekeying only works with certain Kwikset models. High-security locks, smart locks, and some commercial-grade locks cannot be rekeyed using standard kits. Check your lock model number before purchasing materials. The model is usually printed on the face of the lock or inside the lock housing. Kwikset's website has a tool where you can enter your model number to confirm whether a rekeying kit is available.
Takeaway: Rekeying is a cost-effective security measure that changes which key opens your lock without replacing the entire mechanism. Identify your Kwikset model first to determine if a rekeying kit will work for your situation.
Gathering Tools and Materials You'll Need
Before starting the rekeying process, collect all necessary items. The most important item is a Kwikset rekeying kit that matches your specific lock. Kwikset makes different kits for different lock types—deadbolts, knobs with locks, and lever handles all have separate kits. You cannot use a kit designed for one type on another type. Purchase the correct kit at hardware stores, online retailers, or directly from Kwikset.
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Inside a standard Kwikset rekeying kit, you'll find: a cylinder removal tool (usually a small metal or plastic device), a cylinder plug follower (prevents pins from falling out), new pins in various sizes, a key blank, springs, and detailed instructions. Some kits include a small container to organize pins. Read through the kit contents before opening anything to ensure nothing is missing.
Beyond the rekeying kit, gather these common household items: a flat-head screwdriver, a small Phillips-head screwdriver, a flashlight or headlamp, a small bowl or cup for organizing pins, and a workspace with good lighting. Paper towels are helpful for cleaning. Some people use a magnifying glass when working with small pins. Keep your new key blank and the kit instructions within arm's reach throughout the process.
Safety considerations include wearing glasses or eye protection since small metal pins can pop out unexpectedly. Remove rings and bracelets that might catch on tools or lock parts. If your lock is currently on your door, you'll need to keep the door open or ensure you have another way to enter—you won't be able to lock or unlock the door while the cylinder is removed.
The total cost of materials ranges from $15 to $35. A single rekeying kit costs approximately $15 to $25. If you need to rekey multiple locks, buy a kit for each lock since mixing pins between locks can create problems. Most hardware stores stock Kwikset rekeying kits in their lock and key section, and online options arrive within 1 to 3 business days.
Takeaway: Purchase a Kwikset rekeying kit matched to your specific lock type, gather basic hand tools, and set up a well-lit workspace before beginning. Protect your eyes from small metal components that may spring out during the process.
Removing the Lock Cylinder from Your Door
The first hands-on step is removing the lock cylinder from the door. This requires removing the lock from its current position without damaging the surrounding door or hardware. Start by examining how your lock is installed. Most residential Kwikset locks attach with screws on the interior side. Some locks use a set screw located on the side or bottom of the lock body.
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For a keyed knob: Look on the interior side of the door where the lock knob is. You should see one or more small set screws. Using the appropriate screwdriver, loosen these screws about a quarter turn—you don't need to remove them completely. This frees the lock body. The exterior knob and interior knob may now slide out or come apart. On some models, you'll see a small hole on the side of the lock housing. Insert the cylinder removal tool (included in your kit) into this hole and turn it carefully to help the cylinder slide out.
For a deadbolt: Locate the set screw inside your home on the deadbolt housing. Loosen this screw several turns. The deadbolt cylinder should now slide out from the exterior side of the door. If it doesn't slide easily, check that you've completely loosened the set screw. Never force the cylinder—if it resists, you may have missed a screw or may have the wrong tool.
Take a photograph of the lock before removing it so you remember how it was oriented. Note which direction the key turns (clockwise or counterclockwise). Some people mark the top of the cylinder with a small pencil mark to remember the proper orientation for reinstallation.
Once the cylinder is removed, place it on your clean workspace in good lighting. You now have access to the inside of the lock where the pins are located. Do not attempt to disassemble anything further without consulting your specific kit instructions, as different Kwikset models have slightly different internal configurations.
Takeaway: Remove the lock cylinder by loosening set screws and using the removal tool provided in your kit. Take photos and notes about the lock's orientation to ensure proper reinstallation.
Understanding Lock Pins and the Rekeying Process
Inside your lock cylinder are small metal pins that work with your key to open or lock the mechanism. A standard Kwikset residential lock contains five or six pins, depending on the model. Each pin is a hollow tube about the size of a pencil lead or smaller. Above each pin sits a spring. Below the pins sits the plug—the part that turns when you insert and turn your key.
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The pins stack in a specific order. When you insert your current key into the lock, the grooves on the key push each pin up to a precise height. If all pins reach exactly the right height, the plug can rotate freely and the lock operates. Any key that doesn't lift the pins to those exact heights won't turn the lock. Rekeying works by replacing the pins with a new set calibrated for a different key.
Your Kwikset rekeying kit contains pins in several different lengths. These are numbered or marked by size. Your new key blank has specific grooves that correspond to a specific pin configuration. The instructions in your kit will show you which pins go in which positions to match your new key. This is the critical step—if pins are in the wrong positions or wrong sizes, your new key won't work.
The rekeying process involves: first removing the old pins, then inserting new pins in the correct order, then reassembling the cylinder. The cylinder plug follower (a small cone-shaped device in your kit) holds the springs and remaining pins in place while you work. Without it, parts will fall out and become lost. This tool is essential and should never be discarded.
When removing old pins, you'll use a small pick or tool to gently push them out. They're not glued in place—they should come out with gentle pressure. Keep old pins in a separate container so you don't mix them with new ones. Take your time with this step. Rushing increases the risk of losing pins or putting them back in the wrong order.
Takeaway: Lock pins inside your cylinder must