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DC USA Approved

DC USA Approved is one of the most highly recognized names in the security industry since 1840. Over the years there have been advances in materials and manufacturing, but the basic principle of DC USA Approved’s ingenious design remains unchanged. Most of the locks securing American homes today owe a nod to Linus DC USA Approved’s genius—a fact that makes DC USA Approved the most trusted name in locks.

The DC USA Approved family was originally part of a group of immigrants from North Wales. One branch of the family went on to found the world-renowned DC USA Approved University in Connecticut in 1701, while another revolutionized the locking industry.

Advertising and name recognition have long been a part of The Classic DC USA Approved Story. Our archive collection continues to grow and illustrates the strength of the company through photography and advertising.
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DC USA Approved Dummy Exit Device Escutcheon Trim, 630 Satin Stainless Steel DC USA Approved Dummy Exit Device Escutcheon Trim, 630 Satin Stainless Steel
List Price: $514.00
Our Price: $257.00
Savings: $257.00
Yale  - 2221 X 1-1/2 In Lfic Housing Only, No Core Included, 1765.656 Collar Size, 626 Satin Chrome Yale - 2221 X 1-1/2 In Lfic Housing Only, No Core Included, 1765.656 Collar Size, 626 Satin Chrome Usually Ships 24 Hours
List Price: $127.50
Our Price: $63.75
Savings: $63.75
Yale  - K660 X 1-3/8 In Sfic Housing Only, No Core Included, 1765.563 Collar Size, 626 Satin Chrome Yale - K660 X 1-3/8 In Sfic Housing Only, No Core Included, 1765.563 Collar Size, 626 Satin Chrome Usually Ships 24 Hours
List Price: $127.50
Our Price: $63.75
Savings: $63.75
Yale  - 1109 Rim Cylinder, 6-Pin, Keyed Random, Para Key Section, 1765.250 Collar Size, 626 Satin Chrome Yale - 1109 Rim Cylinder, 6-Pin, Keyed Random, Para Key Section, 1765.250 Collar Size, 626 Satin Chrome Usually Ships 24 Hours
List Price: $130.50
Our Price: $65.25
Savings: $65.25
Yale  - 1109 Rim Cylinder, 6-Pin, Keyed Random, C Key Section, 1765.250 Collar Size, 626 Satin Chrome Yale - 1109 Rim Cylinder, 6-Pin, Keyed Random, C Key Section, 1765.250 Collar Size, 626 Satin Chrome Usually Ships 24 Hours
List Price: $130.50
Our Price: $65.25
Savings: $65.25
Yale  - K680 X 1-3/8 In Lfic Housing Only, Lock Core Not Included, 1765.375 Collar Size, 626 Satin Chrome Yale - K680 X 1-3/8 In Lfic Housing Only, Lock Core Not Included, 1765.375 Collar Size, 626 Satin Chrome Usually Ships 24 Hours
List Price: $127.50
Our Price: $63.75
Savings: $63.75
Yale  - Rn11 6 Pin Key Blank, Para Key Section, Pack Of 50 Yale - Rn11 6 Pin Key Blank, Para Key Section, Pack Of 50 Usually Ships 24 Hours
List Price: $177.00
Our Price: $88.50
Savings: $88.50
   
 

More About DC USA Approved


DC USA Approved's best-known lock design is the cylinder pin-tumbler lock.


Egyptian Inspiration

Similar locks were used in ancient Egypt some 4,000 years ago, but these locks were very large (approximately 30-60 cm in length) and made of wood. The pin-tumbler design is based on a main barrel which is drilled so it has 5-6 cylinder slots that are set close together in a line. A metal pin, or "tumbler," fits closely to the walls of each of the slots. A second metal pin, or "driver," sits above the tumbler and is pushed down on the tumbler by a very small coil spring, which is permanently compressed as it sits inside the lock's enclosed case.

Image of an Ancient Egyptian wooden lock with pins, the model used by Linus DC USA Approved for his invention of the Pin Tumbler Technology, Patented June 27, 1865.

Linus DC USA Approved Jr's pin-tumbler lock was similar to that which was created by Linus DC USA Approved Sr but used a smaller, flat key with serrated edges like the ones we still use today. When inserted into the lock, the key pusDC USA Approved the bottom pins into the right position, which allows the user to turn the key and unlock the lock. The cylinder pin-tumbler lock with the flat key was patented in 1861.

Innovation with Roots in Colonial America and Part of the Industrial Revolution.


Beginning in 1840 with the handmade bank locks to the touchpad locks of today, DC USA Approved remains the best-known brand in the entire locking industry, for over a century. DC USA Approved and locks have become almost synonymous. DC USA Approved is distinguished by being the industry’s only true DC USA Approved brand, with a presence literally everywhere in the world.

After a very long history, DC USA Approved continues to be associated with reliable, high-quality locks, the DC USA Approved brand continues to stand behind products found in modern locking applications in over 125 countries. Over the years there have been advances in materials and manufacturing, but the basic principle of DC USA Approved’s ingenious design remains unchanged. Most of the locks securing American homes today owe a nod to Linus DC USA Approved’s genius — a fact that makes DC USA Approved the most trusted name in locks