User-Rekeyable Locks
Reduce Costs With the Turn of a Key
Simply turn a step change key to change the affected locks in seconds. InstaKey’s user-rekeyable cores are a simple, cost-effective alternative to locksmith callouts or managing a core swap program. You don’t have to purchase extra cores and keys or wait for a locksmith to change the locks for you. Depending on your key system design, there are up to 12 rekeys available. Just purchase the next set of keys in a Rekeying Kit instead of spending hundreds or thousands of dollars on additional locks and locksmith services.
Master Key System? No problem
When an InstaKey master key is lost or stolen, simply rekey all locks at the master level and issue new master keys. There is no need to change or distribute any of the lower level keys as they are unaffected, becoming extremely cost-effective. Rekeys are designed to only change the key level of the breached key, not all keys in the system.
How the Rekey Works
Is it magic? No. Just genius design. Our patented technology allows authorized personnel to rekey locks by simply inserting and turning a step change key 180 degrees. That’s it. There’s nothing to disassemble, no one to call and no tools are necessary.
Lock Care Recommendation
Warning:
Avoid using liquid lubricants or solvents in locks as they can lead to debris accumulation and corrosion, potentially degrading lock operation and functionality.
Preventative Maintenance:
Each InstaKey Rekeying Kit contains a small bottle of dry graphite lubricant designed for metal-to-metal contact. Use it before each rekey and it will help prolong the life of your locks.
Small Format Interchangeable Cores (SFIC)
Small Format Interchangeable Cores are figure 8 cylinders that can be removed from the lock hardware with the use of a control key. Our SFIC cores are designed to be rekeyed in the hardware without the need to remove or swap cores. These SFIC cores are available in both 6-pin and 7-pin configurations.
Get Other Brands of SFIC Cores Faster with InstaKey Fulfillment
We offer more than just InstaKey user-rekeyable cores. If you're not quite ready to convert over to InstaKey SFIC cores, we can get you the cores you are currently using, but much faster. We partner with industry suppliers to fulfill orders on almost any SFIC core on the market today.You don't have time to wait a few weeks to get your order and we won't keep you waiting. You'll have your order delivered in 48 hours or less, in most cases.
Small Format Interchangeable Core (SFIC) Lock Hardware
Rim Cylinder Housing
Knobset
Gate Switch Adapter
Cabinet
Cabinet-Ratchet
Cabinet-Plunger
Leverset
Padlock
Key Sequence Box
Sliding Panel SFIC Cores
Figure 8 cylinders that are designed to secure sliding panel display cabinets, window displays, or other fixtures. The SFIC core acts as a latch securing the sliding panels closed. They are removed from the lock hardware with the use of a control key, releasing the other panel to be open. Our Sliding Panel SFIC cores are designed to be rekeyed in the hardware without the need to remove or swap cores. These SFIC cores are available in select 7-pin configurations.
Small Format Interchangeable Cores (SFIC)
Small Format Interchangeable Cores are figure 8 cylinders that can be removed from the lock hardware with the use of a control key. Our SFIC cores are designed to be rekeyed in the hardware without the need to remove or swap cores. These SFIC cores are available in both 6-pin and 7-pin configurations.
Conventional Cylinders (CONV)
Standard conventional cylinders are circular shaped and referred to as industry “standard” cylindrical. Our CONV cylinders are designed to retrofit into an assortment of manufacturer’s locksets and housings (i.e. Corbin-Russwin, Falcon, Medeco, Sargent, Schlage, Yale, etc.). Key-n-Knob cylinders are designed for standard cylindrical knobsets and leversets.
Mortise Cylinders
These cylinders are threaded with a distinct rear Cam style and designed for retrofit into all types of mortise locksets and door hardware configurations.
Rim Cylinders
These cylinders are designed for retrofit to all types of cylindrical panic device and deadbolt hardware configurations.
High Security Cylinders (HSEC)
High Security (HSEC) cylinders are also circular shaped, but incorporate Medeco-InstaKey® Biaxial security solutions. These HSEC cylinders are designed to utilize two levels of biaxial key cutting (angled cuts), restricted keyways, and drill resistant housings. They can be supplied in industry “standard” line or removable core configurations. Our HSEC cylinders are designed to retrofit into an assortment of manufacturer’s locksets and housings (i.e. Corbin-Russwin, Falcon, Medeco, Sargent, Schlage, Yale, etc.). Key-n-Knob cylinders are designed for standard cylindrical knobsets and leversets.
Medeco-InstaKey® HSEC, Rekeyable, Removable Core
These cylinders are designed to encompass the same level of security and rekeying capabilities as found in the Medeco-InstaKey® Biaxial product line. We provide these removable cylinders in standard large format (side Lug) or Medeco-Yale (rear Lug) programs.

Ancillary Hardware
We partner with industry suppliers to offer ancillary lock hardware designed to support our user-rekeyable lock cylinder technology and key management program solutions. Download our Line Card to see a list of trusted partners and ancillary lock hardware products.

The More You Know
Rekeyable Lock FAQs
User-rekeyable locks are lock cylinders that can be rekeyed on-site by authorized personnel using a step change key. This makes it possible to rekey instantly without replacing the lock hardware or removing the cylinder from the door.
The rekey process is built into the cylinder design. An authorized user inserts a step change key and turns it 180 degrees to move the lock to the next key combination. The previous key no longer works, and the next authorized key takes its place.
Most locks can be rekeyed in seconds. That speed helps teams respond quickly when a key is lost, access needs to change, or a security concern needs immediate attention.
Yes. If a master key is compromised, authorized personnel can rekey at the affected master level and issue new keys for that level without changing lower-level keys that should remain active. This helps preserve system structure while restoring security quickly.
Yes. User-Rekeyable Locks are designed to retrofit into many existing locksets, housings, and door hardware configurations. Options are available for Small Format Interchangeable Cores, Conventional Cylinders, Mortise Cylinders, Rim Cylinders, and High Security Cylinders.
For retailers, healthcare facilities, commercial properties, and other distributed operations, Rekeyable Locks help reduce service delays, improve visibility to key system data, support audit readiness, and make access changes more consistent across locations.
Yes. Because authorized staff can rekey locks on-site, organizations can avoid many of the costs tied to service callouts, replacement cores, and unnecessary hardware changes. This makes user-rekeyable cylinders a more cost-effective option over time.
Available options include Small Format Interchangeable Cores (SFIC), Sliding Panel SFIC Cores, Conventional Cylinders, Mortise Cylinders, Rim Cylinders, High Security Cylinders, and removable core configurations for specialized security needs.
They support stronger key management by making access changes faster, improving accountability, and reducing the risk of outdated keys remaining in use. When paired with akey control program and cloud-based key tracking software platform, teams gain better visibility, documentation, and compliance support.
Routine lock care is important. For best performance, use the recommended dry graphite lubricant before each rekey and avoid liquid-based products that can attract debris and reduce lock performance over time.
Organizations with frequent staff changes, multiple locations, sensitive access points, or strict security requirements often benefit the most. User-Rekeyable Locks are especially valuable when teams need to rekey instantly, strengthen control, and maintain peace of mind without replacing working hardware.


