Master Key System Installations

Systematize the key sets for your local business or commercial site, creating ease of access and access control.

Master Key Systems In Missouri

From hotels and shopping centers, factories, and public buildings to schools and restaurants, we have the best Master Key Solutions for your needs.
Master Key System Installations In St. Louis & St. Charles MO - Master Locksmith (813) 760-1066 (1)

“The BEST service call I have ever had! Called Tech in the early afternoon. He came out a few hours later, fixed the problem immediately! AND Reasonably! What a great guy. Very trustworthy. Will recommend Master Locksmith!”

Why Use Master Locksmith For Master Key Systems At Your Missouri Business? 

  • We Are A Trusted Google Guaranteed Locksmith Company
  • Same-Day Commercial Key Cutting Locksmith Services
  • Customer Service Representatives Answer Your Call
  • Use Only Trusted Brands For Locks – Hardware – Parts- Keys
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  • Our Employees Are Pleasant, Professional, Licensed (#LC001556113), And Insured
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24/7/365 Emergency Commercial Locksmith Services

Emergencies can happen when we least expect it. Whether you're locked out of your business or need a new set of keys for your hospital doors, our Expert Commercial Locksmiths have you covered.

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Licensed-Bonded-Insured Commercial Locksmith Services

- High-security locks and security doors
- Access control systems
- Master key systems
- Keyless entry systems
- Emergency lockout service
- Re-keying
- Duplicate keys
- Lock repair
- Mailbox keys
- Fleet vehicle key service
- Lockboxes
- Gate keys
- Dock and warehouse keys
-On-site safes

Free On-Site Estimates - Master Locksmith

Free On-Site Estimates

You're already locked out of your business. We aim to make your day easier so, feel free to contact us and get a free On-site estimate. Click Above Image To Call And Schedule Your On-Site Estimate (314) 400-7054

Contact Us- We Install Master Key Systems In Your Area

Our Locksmiths Can Help 24 Hours In These Areas Of Missouri

St. Louis County, St. Charles County, South County MO, Downtown Stl, University City, Central West End, Chesterfield, Ballwin, Webster Groves, Overland, Brentwood, Creve Coeur, Des Peres, Ladue, Clayton, Mehlville, Arnold, Fenton, Oakville, Downtown St. Louis, Ellisville, Bridgeton Hazelwood, Jennings, Ferguson, Maplewood, Crestwood, Kirkwood, Berkeley, St. Ann, St. Peters, Wentzville, Cottleville, Dardenne Prairie, Weldon Spring, Earth City, Lake St. Louis, O’ Fallon.

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24 Hour Master Key Solutions - Master Locksmith (813) 760-1066 (3)

24 Hour Master Key Solutions- Master Locksmith

Many people appear to be fascinated by Master Keys. The device’s perplexing character, I believe, is the source of interest.

People usually have a lot of questions about Master Keys and how to properly set them up for use in a business, like:

–How can one key unlock two doors while another key that opens one of them does not open the other?

–Is it the key that makes it unique?

–Is it the lock’s internal mechanics?

  The following content explains the parts of the Master Key System and you should be able to comprehend any Master Key System after reading this info, from the simplest to the most complicated. With a rudimentary understanding, it should be possible to extrapolate future system security enhancements.

Some people don’t care to understand or don’t have time to learn a system or it’s functions and just want it installed and have someone maintain it for them. It that’s you and you’re in need of Better Access Control through using Master Key Sets and a System for your Door Keys at your commercial, storefront, office, or any other type of business, call Master Locksmith at 813-760-1066 for urgent assistance. We offer the following Missouri Commercial Locksmith Services and more: 

Click to call on any of these services—

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Master Locksmith was voted “Best Locksmith In St. Louis” by a third-party review site- Expertise.

What Is A Master Key System?

A master key system is a key plan whereby selected keys can open a number of pre-defined doors. … These keys work with different types of lock, e.g. door locks, cabinet locks, padlocks, etc., as long as the cylinder inside them is of the same model.

Master Key System For Businesses - Master Locksmith (813) 760-1066

What Are Master Keys And How Do They Work In A System? 

The majority of Master Key Systems work on a Pin Tumbler Lock. A simple rundown of how a standard pin tumbler lock works: A pin stack consisting of a driver pin and a key pin must be elevated such that they rest on opposite sides of the shear line to open a lock. Within a lock, a key lifts key pins. These key pins come in a variety of sizes. The driving pins will be available in a variety of sizes. As a result, the key must have the proper grooves to lift the key pins to the proper height.

Pin Tumbler Lock - Master Locksmith (813) 760-1066
Master Wafers Master Pin - Master Locksmith (813) 760-1066

It’s an oversimplification, but if you’re in St. Louis or St. Charles and want to learn more about the details, we’re happy to help. It will be easier to comprehend the addition of a Master Key System if you have that understanding. All that is required to convert any ordinary Pin Tumbler to a Master Key System is the addition of a Master Wafer (also known as a Master Pin) between the driver and the key pin. A Master Wafer is essentially a microscopic pin in the shape of a hockey puck. The pin stack will have two shear lines once it is in position. A pin stack shear line with a master wafer below or above the line.




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What Are The Benefits Of Calling Master Locksmith For Commercial Locksmith Services? 

Commercial Locksmithing is something we’ve been doing for over 5 years. In the state of Missouri, our locksmith staff is fully Licensed and Insured (License #LC001556113). We provide fast, competent, and inexpensive rates as well as prompt service throughout St. Louis and St. Charles.

Types of businesses and commercial buildings we offer Commercial Locksmiths for:

  • Hospitals
  • Schools
  • Banks
  • Factories
  • Warehouses
  • Docks
  • Shipyards
  • Train Stations
  • Bus Stations
  • Storefront Businesses
  • Libraries
  • Colleges
  • Car Lots
  • Medical Clinics
  • Daycares
  • Jewelers
  • Payday Loan Stores
  • Restaurants
  • Gun Shops
  • Post Offices
  • Storage Facilities
  • Shipping Companies
  • Chemical Plants
  • Bars And Nightclubs
Master Key System For A Hotel - Master Locksmith (813) 760-1066 (1)

Keys In A Master System- From the most limited to the most extensive access


Master Key System -St. Louis And St. Charles Missouri

Change Key– This key is also known as a sub-master key ( guest key in example above). It will only unlock one lock, and only those that are identical. The master key, as well as any key above that rank, will unlock the lock that the change key opens.

Master Key– There is only one key for a lock if it does not have a master key. To convert a simple lock to a master-keyed lock, you’ll need this key. This will be the highest-ranking key in various systems. A master key is commonly abbreviated as ‘MK‘ in the trade.

Grandmaster Key– A Grandmaster Key is used to get access to several master key systems. Every Master system under it, as well as the future change keys under those systems, will be unlocked with this key. A master key is commonly abbreviated as ‘GMK‘ in the trade.

Great Grand Master Key – The great grand master key will unlock all grand master key systems, master key systems, and alter keys beneath them. This tendency may theoretically continue until the locks become too difficult to operate. There could be grandmaster keys with great great great and so on, to denote the level of that particular Great Grand Master Key.

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Emergencies can happen when we least expect it. Whether you’re locked out of your warehouse, factory, hospital, or your company’s safe combination has been compromised, our Expert Commercial Locksmiths are here for you.

Does Master Locksmith Offer Comprehensive Services For My Business?

It’s time to take the next step once you’ve had your Master Key System set up. This is an excellent opportunity to install new panic bars or exit doors to ensure that your emergency systems are within code and operating properly. We can complete the task swiftly and without disrupting your employees or customers.

Our On-Site Locksmith can also suggest ways to avoid a similar problem in the future. We can suggest upgrades like:

  • High-security locks and security doors
  • Access control systems
  • Keyless entry systems
  • Emergency lockout service
  • Re-keying
  • Duplicate keys
  • Lock repair
  • Mailbox keys

Contact Us

Get in touch if you need some other kind of Locksmith Services Near YouInstallations Close By, a Repair In Your Town, Replacements Near Your Home or Business, or if you need more information about our related Comprehensive Lock, Key, and Security Services.

  • All areas around St. Charles and St. Louis County customers call (314) 400-7054
  • Downtown St. Louis and St. Louis City or South County Stl call (314) 470-9193

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