Corporate Profile: The Master Lock Company

July 2, 2018

The Master Lock Company is dedicated to empowering people to live safer, more secure lives. We have built trust with individuals and businesses by delivering strong, reliable solutions that protect valued assets and safeguard lives. We are proud of our long history as a trusted partner to our dedicated locksmith and security hardware customers.

Our pioneering founders, John Junkunc and Harry Soref, inventors and engineers, introduced many firsts to the industry: precision-machined, solid-body padlocks and laminated padlocks, ball-locking shackles, serviceable padlocks, and even the dial combination lock. These innovative solutions built our iconic brands – American Lock® and Master Lock® – and represent our full suite of products specifically designed to deliver the quality, durability and superior security that suit commercial and residential requirements.

Today, we carry forward their spirit of identifying customer needs and developing new products based on insights and research. We blend our industry findings with feedback from our locksmith partners to deliver enhanced solutions to you, our valued customers.

American Lock

Dedicated to the trade, American Lock has over 100 years providing authentic, hard-working and dependable security products that perform with precision. American Lock is known for its high-quality, customizable lines of stainless-steel, steel, brass and aluminum solid-body padlocks.

The new American Lock Multi-Cylinder Padlock continues the tradition of flexibility and convenience with a unique quick-change shackle and key-retaining converter. It’s the only padlock that accepts KIK and the nine most common padlock cylinders in a single lock body. It’s truly the one lock that does more.

American Lock remains the solid, dependable security commercial customers turn to when it matters.

Master Lock

Master Lock is recognized around the world as the authentic, enduring name in padlocks and security products. Trusted for nearly a century, Master Lock offers the largest range of padlock styles – from reliable laminated padlocks, to new stainless-steel Commercial Magnum®, to the venerable ProSeries® Weather Tough® – there is a padlock to meet the security level customers want.

Master Lock Residential Door Hardware is a growing category with our security partners. Designed with the adjustability locksmiths prefer, and the quality locksmiths can stand behind, this full range of knobs, levers and both Grade 1 and Grade 3 deadbolts, is offered in the finishes and styles owners want. Best for locksmiths, these models are available with the four most popular keyways and with replacement cylinders, so you can easily match new locksets to a customer’s existing hardware.

Recent electro-mechanical innovations of the Electronic Locker Lock and Bluetooth-enabled padlocks and lock boxes provide customers ease of use and administration along with the technology consumers increasingly expect. These new products are ideal for health and recreation, facility access management or real estate professionals.

Businesses and individuals turn to Master Lock for everything worth protecting.

At The Master Lock Company, our purpose is to provide peace of mind and protection where people live, work and play. It's a responsibility we take seriously – one that guides us to fulfill the expectations of our customers every day. To learn more, visit