Transforming security worldwide

Sargent and Greenleaf delivers proven security solutions that protect people and assets at home, at work, and in communities around the world. For the past 160+ years, our high-security locks and industry expertise have been trusted by governments, banks, and businesses of all kinds to meet their security needs and counter emerging threats. S&G’s portfolio of high-quality electronic and mechanical locks are used in a wide-range of applications including gun safes, commercial safes, ATMs, vaults, and highly sensitive SCIF environments. 

S&G has created a unique family of brands that offers a comprehensive portfolio of lock and door solutions to serve a wide-range of our customer’s security needs across industries and applications.  Through our trusted brands, Delaney Hardware and Premier Steel Doors and Frames, we offer businesses and homeowners high-quality door hardware and fixtures, commercial-grade doors and hardware, and multi-family and residential security solutions.

Together, we are on a mission to make the world more secure today and in the future. 

Customer-focused solutions

Governments, banks, and businesses of all kinds trust Sargent and Greenleaf to meet security needs and counter emerging threats. Our engineers, customer service team, and global distributor partners make it easy to find right-sized security solutions—from high-security spaces to smart home security.

Banking & Financial
Energy & Utilities
Travel & Transportation
A legacy of visionary design

Our forward-thinking solutions build on more than 160 years of expertise. Since our founders’ invention of the key-changeable combination lock, S&G has stood for transformative security innovation. 

Learn our history.

A growing family of brands

As we look for ways to better serve our customers across industries and applications and around the world, we continue to expand our family of brands to offer more comprehensive solutions. 

Explore our growing portfolio.

S&G family of brands leadership

Chief Executive Officer


Chief Financial Officer


President, Sargent & Greenleaf


President, Premier Steel Doors and Frames


VP, Government Services

Dave Harris

Director of Engineering


Director of Operations

Corporate Office

One Security Drive
Nicholasville, KY 40356

Phone 859.885.9411

Fax 859.885.3063


Delaney Corporate Office

655 Peachtree Industrial Blvd. Building 100
Sugar Hill, GA 30518

Phone 800.952.4430

Fax 770.844.8658


Premier Corporate Office

P.O. Box 7269
Monroe, LA 71211

Phone 800.962.6517

Fax 318.323.5068


Global Distributors

North America


The Sargent and Greenleaf Timeline


James Sargent establishes James Sargent Lock Company to design and manufacture high-security products.

Sargent invents Sargent’s Magnetic Bank Lock—the first key-changeable combination lock—and gains immediate acceptance from safe manufacturers and the U.S. Treasury Department.


The U.S. Treasury Department adopts Sargent’s Magnetic Bank Lock as its standard.


Sargent and Colonel Halbert Greenleaf, who just returned from the Civil War, become business partners, launch Sargent and Greenleaf (S&G) and open a manufacturing facility in Rochester, New York.


Sargent patents Sargent’s Automatic Lock.


S&G obtains a federal contract to provide safe locks to the U.S. Treasury Department. It is the first of many ongoing government contracts for the company.


Using parts from locks and two 8-day kitchen clocks, Sargent invents and patents the first Time Lock for bank vaults.


S&G begins producing jail locks, becoming one of the largest manufacturers of the specialty lock well into the 1950s.

James Sargent himself installs the first Sargent Time Lock in the First National Bank of Morrison, Illinois, where it remained for nearly 40 years.


Sargent connects one of his combination locks to a delay timer, inventing the first Time Combination Lock, a lock that remains locked for a predetermined amount of time after the combination is dialed.


The post-World War I depression and the Great Depression of the 1930s leads S&G to expand its portfolio to include builder hardware products, such as reversible panic exit devices, classroom wardrobes, heavy-cast lavatory stall hardware, push and pull plates and other useful hardware.


During World War II, S&G’s entire operations are devoted to ordinance work, such as the production of guidance systems for torpedoes, depth charges, projectiles and special combination locks for weapon storage and arming.


S&G produces the first Manipulation Proof Combination Lock for government cabinets and safes.


S&G relocates its headquarters and manufacturing facility to Nicholasville, KY. The new campus includes 78 acres of land, 100,000 square feet of air-conditioned manufacturing space and 22,000 square feet of office space.


S&G establishes an international operation in Lausanne, Switzerland, in order to serve a growing number of European and other international customers.


S&G is awarded a Department of Defense contract for high-security padlocks.


S&G introduces the first Electronic Safe Lock, the 6120, which is still manufactured today.


S&G begins production of the IP Series Lock and Biometric Keypad Lock, representing a significant advance in technology that is still apparent today.


STANLEY Black and Decker, a worldwide manufacturer and marketer of tools, hardware and specialty hardware products, acquires S&G, making it a wholly-owned subsidiary of Stanley Security Solutions, Inc.


S&G invents and produces the S&G 2890B Lock, a modular locking solution that revolutionizes high-security areas within government facilities by meeting both security and life safety demands of the highly sensitive SCIF environments.

S&G invents and produces the S&G 2890B Lock, a modular locking solution that revolutionizes high-security areas within government facilities by meeting both security and life safety demands of the highly sensitive SCIF environments.


S&G is acquired by OpenGate Capital, a global private equity firm that strives to acquire and optimize lower middle market businesses throughout North American and Europe.


S&G acquires Delaney Hardware Company (“Delaney”), a leading provider of premium builder hardware for residential homes, multi-family buildings, and commercial projects. Headquartered in Cumming, Georgia, Delaney offers a full portfolio of hardware including door hardware, digital locks, barn door hardware, bath accessories, commercial hardware, and trim hardware.

S&G’s acquisition of Delaney includes its Premier Steel Doors & Frames division, which is a specialty manufacturer of hollow metal security doors and frames with operations in Monroe, Louisiana; Houston, Texas; and Austell, Georgia.