A key system is the plan behind every key and lock in your building. It decides who can open which doors. In a master key system, each lock has its own change key. Sub-master keys open a group of doors, like one floor, department, or tenant. A master or grand master key opens them all. Pair this with a restricted keyway and keys can’t be copied at a hardware store. The result is fewer keys, clear records, and doors that stay secure every day.
Most buildings lose track of keys over time. Staff leave without turning them in. Copies get made with no record. Old master keys float around for years. Each one opens a door you no longer control. Our locksmiths audit your current keys, map every opening, and build a clear key schedule. Then we rekey, add restricted cylinders, or design a new hierarchy that fits your team. You get real key control across Maryland, DC, and Northern Virginia.
Every key system runs on hardware. The right cylinder or core decides how secure your keys are and how fast you can rekey. Explore our services by type, from master keyed cylinders and restricted keyways to interchangeable cores and high-security UL 437 cylinders. Each page explains how it works, where it fits best, and what to expect from installation.
High security key blanks: patented keyway key stock we cut and control across Maryland, Washington DC and Northern Virginia. Licensed, insured, 25 years in business.
A locksmith-level reference on keyway systems: broach profiles, sectional families, pin spacing and key control, written by King Locksmiths after 25 years serving the DMV.
King Locksmith And Doors cuts and programs laser cut keys for high-security door locks and fleet vehicles in Maryland, DC and Northern Virginia. Get key control and a free quote today.
Skeleton key system repair, key cutting, and cylinder retrofits for historic offices, hotels, churches, and agencies in Maryland, DC, and Northern Virginia. Keep the look, gain control.
Standard house keys like Kwikset KW1 and Schlage SC1 are cheap and fast to copy. Learn how to pick the right blanks, plan keying, and keep full control of every key at your DMV offices.
A restricted keyway uses a key blank that the maker only sells to authorized dealers. That means no one can copy your keys at a hardware store or kiosk. New keys need a signed request from someone on your approved list. Patented keyways, such as Medeco or Schlage Primus, add patent protection that keeps blanks under tight control for years. For master keys, this is one of the best ways to protect the whole system.
Interchangeable cores are a smart fit if you rekey often. A special control key pulls the core out in seconds, and a new one drops right in. There is no need to take the lock apart. Small format interchangeable cores (SFIC) follow a shared standard and fit many lock brands. Schools, hospitals, hotels, and offices with high staff turnover often save time and money with an IC system.
We start with a site visit. Our team counts your doors, checks your current hardware, and asks who needs access where. Then we build a key schedule that maps each key level to each opening. We recommend the right cylinders, keyways, and security level for your budget. Once you approve the plan, we pin, install, and hand you full key records. We serve businesses, government agencies, and healthcare sites across Maryland, DC, and Northern Virginia.
Key systems work hand in hand with the rest of your door hardware. Explore these related guides to compare other hardware options and find the right fit for every commercial door.
