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About Simpson Strong-Tie

Simpson Strong-Tie Company Inc. was founded in Oakland, California 1956. The Company's common stock trades on the New York Stock Exchange under the symbol "SSD". For over 60 years, Simpson Strong-Tie has focused on creating engineered structural products that help people build safer and stronger homes and buildings. Considered a leader in structural systems research, testing and innovation, Simpson Strong-Tie® products are recognised for helping structures resist high winds, hurricanes and seismic forces.

Simpson Strong-Tie is one of the largest suppliers of structural building products in the world, including timber connectors, fasteners, fastening systems, anchors and lateral-force resisting systems. The company is known for its commitment to product development, engineering, testing and training as well as providing customers with quality products and exceptional service. Today, Simpson Strong-Tie has more than 3,100 employees and more than 50 factories, offices and warehouses all around the globe.

Simpson Strong-Tie began manufacturing engineered structural connectors for timber-framed construction in 1956 in California, USA. Nearly 40 years later, the company entered the anchoring industry, and the product line has expanded to include many anchoring, crack-injection repair and masonry adhesives, and a full line of powder-actuated tools and fasteners.

In 2004, Simpson Strong-Tie acquired Quik Drive® fastening systems, a company based in Gallatin, Tennessee, USA. Quik Drive operated in Australia prior to the acquisition and has since continued to distribute a wide range of Simpson Strong-Tie products around the country. This range now includes fasteners, mechanical and chemical anchors, lateral systems, powder-actuated tools and connectors. The Simpson Strong-Tie sales team operates nationally and is equipped with technical support and training to assist with specification and jobsite support to service the needs of our customers.



On a Sunday evening in the summer of 1956, Barclay Simpson's doorbell rang. A neighbor's brother had stopped by to ask if he could make a product to connect the ends of 2x4s for a roof. Barclay replied, "Of course!" So he sat down with his plant foreman, developed some rough sketches and used a punch press to create his first joist hanger.

That simple beginning was about more than just solving problems. For Barclay, it was about putting the customer first. Our phrase–"Our customers are our bosses"– is a simple philosophy that permeates all that we do.

At Simpson Strong-Tie, it's about enjoying what we do, doing it right and supporting our customers every step of the way–from order placed to product installed.

Today, Simpson Strong-Tie is the world leader in structural product solutions–solutions that not only help our customers, but help make structures safer and stronger. The company is recognised as the genuine connector brand in the residential construction industry, and also for its ever-expanding offering of shearwalls, moment frames and fasteners. In the last two decades, the company has expanded further with products for infrastructure, commercial and industrial construction, including mechanical anchors, adhesives and products that repair, protect and strengthen concrete and masonry.

But even with all of the growth, we still keep it simple, focusing on the core values that Barclay instilled and living up to our reputation of reliability, innovation, quality and service.



We provide solutions that help people design and build safer, stronger structures.



To provide the most trusted construction solutions on jobs worldwide.



Read Barclay Simpson's Nine Principles of Doing Business:

#1 Relentless Customer Focus

Show interest in their lives. Make them feel important and then you may find out that they get interested in you and your products much more than they would if you just fill an order. No matter what your position in the company, it’s vital that you keep the customers and users in mind whether you have direct contact or not. What do they need from you? How can you improve their lives?

#2 Long-Range View

Good business leaders focus on the long-term outcomes, not short-term gains. You should think of your role in the company as being a long-term investor not a day trader. This is a rarity in business these days. Long-term relationships are built on trust and respect and this applies to your everyday job. Show respect and build trust in everything you do with your customers, users, and with your fellow employees. Always be straight-forward. Don’t just tell people what they want to hear. Tell it like it is.

#3 High-Quality Products

A company can only be temporarily successful without a quality product. The people in our company can feel proud of what our products can do and each and every person in the company plays a role in ensuring that our products meet high standards. It is important to remember that the work you do makes a difference.

#4 Be The Leader

Being the leader in anything attracts the best people and success depends on your people. If you’re a winner, it’s in your gut that you want to be part of the best. That is where building a brand comes in. When your brand is the leader, people will buy your product same price, or more, and will not accept a substitute.

#5 Everybody Matters

company culture says that everyone gets recognized for their contribution, no matter the role. There are no big shots, no parking places. It’s always been first names. Nobody’s Mr. or Ms. You’re Joe or Carol or Pete or Barc – we’re all working together toward the same goal. We rely on each other to be successful, we show each other respect.

#6 Enable Growth

When people join our company, they don’t come for a bus stop. This is a career. When we hire someone, they find out when the job above them becomes available they’ve got a shot at it. People work harder and smarter when they’re excited about their jobs. A great company gives people an atmosphere where they’re happy to come to work in the morning. And that may not happen everyday, but in general they have confidence in their future with the company where they know their hard work will be recognized. People are encouraged to grow, to seek out the positive in everyday challenges and find new opportunities to contribute to the company’s success. If you want someone to really put out the effort it should be rewarded – it’s a direct connection. Everybody in the company can make more money if the company makes more money.

#7 Risk-Taking Innovation

Great companies are built on creative ideas from talented people – you have to take risks. Sure, we all make mistakes along the way. I certainly have and if you’re really going to be innovative, you’re going to make mistakes. Don’t become stagnant in your job, be curious. Don’t play it safe, take risks. Be creative and you’ll inspire yourself and others to try something new.

#8 Give Back

We’re all so fortunate. No matter what each of our personal situation is, we know that there are many others in this world who will never have the opportunities we’ve had. It is our responsibility to reach out, in whatever manner we can, to support others. We’re all connected in some way and are all part of a greater community. It’s important to make what impact you can – you may not have the financial means that others might have but whatever you can do, do it. Look for small ways to give back every day. Help out your neighbor, make time for others, do what you can.

#9 Have Fun, Be Humble

To be successful takes hard work, but getting there can be fun if you let it be. Your attitude is what matters. This is one rule I try to live by. Don’t take yourself too seriously or think you’re too important. That doesn’t mean you shouldn’t try to be important and do important things, just don’t let your ego get in the way. Find something that has meaning that you can do something about and forget about the other stuff where you can’t. Have fun and be productive. Great companies are built with great people. When I got into this business, I decided that I’m no genius so I need to hire the very best people and they make the company the kind of place where they don’t want to go anywhere else. They want to stay here and help build it.


We manufacture products for wood, masonry and concrete construction. These different manufacturing processes present unique challenges. Teams from our manufacturing facilities continually work to implement cost-effective, sustainable solutions. Read more about our manufacturing process, and what our different manufacturing facilities do to increase efficiencies and reduce our impact on the environment.


Manufacturing Process

Manufacturing for Timber Construction

R&D engineers focus on material efficiencies and innovative features to minimise waste in our steel connector, anchor and fastener designs.

  • Lean processes at our manufacturing plants help to reduce waste and improve production efficiencies.
  • Energy-efficient lighting, heating and cooling systems further reduce our impact on the environment.

Manufacturing for Concrete Construction

  • Some of our concrete construction products are used to rehabilitate and reinforce projects. This strengthening provided by these products reduces the need for complete demolition and removal of deteriorated materials to landfills.
  • These concrete products contribute to the longevity and sustainability of the projects on which they are used.
  • Some of the raw materials used in these products contain chemicals that are hazardous. After fabrication, these chemicals are inert and are no longer reactive.


Quality Programs

Our Quality Management System utilises the requirements of the ISO 9001 Standard, the most recognised and implemented quality management system standard in the world.

We achieved ISO 9001 registration in 1996, and believe that ISO registration is a valuable tool for maintaining our high quality standards. We integrate all of our new business locations into our quality system and most achieve ISO 9001 registration.

  • ISO 9001-2015
    Simpson Strong-Tie is an ISO 9001-2015 registered company. ISO 9001-2015 is an internationally recognised quality assurance system which lets our domestic and international customers know that they can count on the consistent quality of our products and services.
  • ISO 14001
    Our French (St. Gemme la Plaine) and UK facilities are ISO 14001 certified. This standard states the requirements for an environmental management system, and applies to the environmental aspects over which our company has control and can be expected to have an influence.
  • OHSAS 18001
    Our Tamworth, UK facility is OHSAS 18001 certified. This certification reflects an internationally applied British Standard for occupational health and safety management systems.


Use of Non-Toxic Materials

Connector products that require painting are processed using either water-based paints or powder coating. Powder paint has no volatile organic compounds (VOCs), poses no fire hazard and does not produce toxic fumes while drying. Water-based paint has a minimal amount of VOCs. Submerging our products in water-based paint rather than spraying eliminates risk of the paint being atomized into the air, further reducing the effect on air quality. We use non-toxic powder for powder-coated products, and filter and recirculate the water used in this process in powder-coated wash tanks. This eliminates wastewater entering groundwater. Both methods eliminate the volatile organic emissions associated with solvent-based paints.


Steel Recycling

In 2017, Simpson Strong-Tie recycled more than 13 million kilograms of scrap steel.

Simpson Strong-Tie evaluates two different steel recycling data points:

  1. Before we manufacture: what percentage of mill-certified steel that we purchase is recycled?
    Our connectors are produced from mill-certified steel. It is difficult to ascertain the exact amount of recycled content in our products. We rely on the information published by the steel industry.
  2. After we manufacture: what amount of steel do we generate as waste, and send for recycling?
    In addition to using recycled steel, our metal stamping production dies and factory tooling are designed to help minimise steel waste. We recycle the scrap steel resulting from our manufacturing process at all facilities around the world.


From the first years of operation, Simpson Strong-Tie has led the industry in engineered structural connector design. Today, we have more than 60 engineers on staff, and the legacy of innovative product development lives on through the work we do every day. We have several accredited test facilities, giving us the capability to test the smallest products to the largest systems. The work we do in our labs gives us a better understanding of how structures perform, advances our design technology and improves building safety.


Our Research Labs

Tyrell Gilb Research Laboratory, Stockton, California

Tyrell Gilb Research Lab is the hub of our research and development activities. The lab's highly specialized equipment allows us to test a structure's ability to resist earthquakes, high winds and other natural disasters. Full-scale structural components are tested using the lab's seismic shake table and cyclic/static test frame. The shake table re-creates ground motion, moving back and forth horizontally at the foundation level. The vertical and horizontal cyclic/static rigs apply force laterally to the top of a wall structure and can test wall sections up to five-stories high. Together, this type of testing provides an accurate measurement of a structure's resistance capabilities. The lab's three-dimensional testing of full-scale buildings is used to help clarify issues regarding allowable resistances of bracing methods under various load conditions. (Click here to see our test rigs in action.) The newest addition to the lab is a designated area to test our new line of Repair, Protection and Strengthening Systems for Concrete and Masonry. We now have the ability to submerge timber piles in water to recreate marine conditions for our products used underwater.

The lab is named in memory of Tyrell (Tye) Gilb, a former professor of architecture who led our research and development efforts for 35 years. "Tye's legacy of innovative product development lives on through the work done here," says Tom Fitzmyers, vice chairman of Simpson Strong-Tie. "The laboratory's testing capabilities allow us to advance our structural design technology, which improves building safety and ultimately helps save lives. That would have made Tye very proud."

Connector Laboratory, Pleasanton, California

Housed in our home office, the Connector Laboratory is accredited in more than 20 international construction standards. The lab routinely tests product prototypes and construction code criteria. Engineers in the lab use a variety of equipment to test not only individual connectors, but entire structural systems. In addition to testing products, the lab focuses its research on corrosion, wood assemblies, and concrete and masonry. The state-of-the-art computer system and 3D printer are used to build and test prototypes, allowing us to respond to customer testing and criteria requests.

Anchor Systems Research and Development Facility, West Chicago, Illinois

The main function of the West Chicago Laboratory is to test the structural integrity of concrete structures. On-site equipment can simulate earthquakes and other forces that can cause concrete to crack. Research from the lab is used primarily to develop new anchor and adhesive products for infrastructure, commercial and industrial construction. It is one of only a few labs in the United States accredited for this type of testing.

Branch Laboratories, North America and Europe

We have research facilities at our branches across the globe. In Tamworth, UK, engineers test prototypes and code criteria for the European construction market. Our North American branch laboratories (Texas, Ohio, Northern and Southern California, and Canada) address regional construction issues to service local customers.


Industry Innovation

Our research and development activities have led to many advances in the building industry. Over the years, we have developed countless products that help ensure structural safety and reduce cost, and created new construction systems to improve the way structures are designed and built.

Research initiatives and product innovations resulting in higher load values, faster installation, reduced costs and greater structural safety include:


Our corrosion research was instrumental in helping develop product solutions when the industry switched to new, and often more corrosive, formulas of pressure-treated wood. We actively communicated research and product recommendations to the building industry.

Structural Fasteners

Pioneering the use of structural fasteners (Strong-Drive® structural fasteners) with engineered structural connectors improved the strength and performance of wood-frame building connections as well as significantly reduced installed time and costs. This product change led by Simpson Strong-Tie is being well-received in the field and in the engineering community, and continues to gather momentum.

3D Testing

Our 3D testing of full-scale buildings continues to help clarify issues regarding allowable resistances of bracing methods under various load conditions.

Cyclic Testing

Leading the way in concrete repair, protection and strengthening, we conducted the industry’s first full-scale, cyclic tests of repaired wood piles using the FX-70® Structural Repair and Protection System. The tests verified the system’s performance capabilities and provided engineers with real-world data to help them evaluate the FX-70 System as a potential solution for their structural repair applications.


I'm loving this [PFS]. I've built so many places now with steel portal frames and it's always a nightmare. Logistically and labour wise. If I ever see an opportunity to adapt this method, I most definitely will recommend [thumsbs up].

Brad McEwan - Sanford Build Co.

I am already using the Simpson SDWS screws for my wall frames, the SDWC are a no brainer now with the Quik Stik. No need for a ladder or hammer, I won’t be using triple grips ever again.

Scott Gilbert - Gilbert Builders

I can’t believe you don’t have to use triple grips anymore. This (SDWC on Quik Stik) saved heaps of time, only took a few seconds!

Mason - McQuinn Constructions

I’ve used the Quik Drive tool for years. It’s so much easier than crawling around on my knees like I used to when fixing flooring, and now that I can use it for Decking and Weatherboards it’s even better!

The other fantastic product that we use a lot of is the Deck Drive Stainless Steel 305 Wood Screw for screwing timber decks down with.

The 10g x 65mm T-25 Head is strong and perfect for using with our small impact drivers and my clients really like the look of the screws in the finished deck.

Mike Reidy Builders

I turned up on site today and the builder has used the HTT4 strong tie hold down brackets on all of these posts! I paused and asked why he’d used those, he says he only uses strongtie hold down brackets now!! “They’re just so much better and stronger, I buy them in bulk! I think they’re great!” 

Vivienne Jones - Structural Engineer

The new CCN64 connector nailer is super good as it saved us about 4 hours alreday!

Zac - Builder


What makes Simpson Strong-Tie special?

We've built a workplace where people are connected and engaged in creative thinking from day one throughout their careers.

When you think of the best a family has to offer — support, collaboration and respect — that's what we value at Simpson Strong-Tie. When there's a win, we'll cheer you on. When there's a snag, coworkers step in to help you out. Working on solutions together is just the way we do things here, and that creates an atmosphere that often feels like home.

At Simpson Strong-Tie, you'll find talented, passionate, dedicated, humble and genuinely kind people who are all connected by our shared mission — to provide solutions that help people design and build safer, stronger structures.

It's this mission and our strong people-focused values that have made Simpson Strong-Tie a unique place to work for more than 60 years — a place where you can connect, create and build your career. We invite you to learn more about our culture and why our employees are our most loyal customers.

Simpson Strong-Tie Company Value No. 6 — Enable Growth

When people join our company, they don't come for a bus stop. This is a career. A great company gives people an atmosphere where they are happy to come to work in the morning and they have confidence in their future with the company. Where they know their hard work will be recognized. People are encouraged to grow, to seek out the positive in everyday challenges and find new opportunities to contribute to the company's success.

-Barclay Simpson, Founder


Hear From Our Employees

We value our people — no matter their role. We trust them. We respect them. We provide them the tools they need to succeed in their jobs. We allow them to take risks. And we reward them for success.

-Karen, Software Development, Boulder, CO

We treat each other with respect – you feel a sense of trust, empowerment and freedom to do what you think is right, which also results in you feeling like you're worth something.

-Shipping employee, McKinney, TX

The culture is very unique. The people here are what make this company great. This isn't a company where you just have coworkers. This is a company where you build friendships.

-Keith, Engineering, McKinney, TX


Structural Connections


Unmatched Quality from the Truss to the Foundation

With nearly 60 years of field and R&D experience, Simpson Strong-Tie® timber connectors are manufactured to the industry's highest standards. From framing angles to straps to heavy-duty joist hangers, we offer the most diverse product line so that you have the right product for the job.

Simpson Strong-Tie® connectors offer unmatched quality with laboratory and field testing, and are backed by our uncompromising commitment to customer service. As the company that built the connector industry, you can count on Simpson Strong-Tie® to work closely with builders, engineers and building officials to deliver innovative, building code-compliant solutions to help build safer, stronger structures economically. Download the Structural Connectors Overview Flyer.

Timber Connectors

From testing to service to availability, everything we do is engineered to ensure your project's success. With every product, you know you are getting the quality, value, service and on-time delivery that we have built our reputation on for the past 60 years.

From straps and ties to joist hangers and much more, Simpson Strong-Tie® structural connectors increase the strength and safety of timber-frame structures. Each connector is unique to Simpson Strong-Tie and is designed for specific applications without the need to adapt metal plating to suit a connection. Download the Timber Construction Connectors Catalogue (2016-2018).