“Corrosion resistant” doesn’t mean a finish or material is suitable for all environments. In some cases, galvanized connectors and fasteners are fine. In other cases, stainless steel is the best long-term solution. Simpson Strong-Tie offers a wide range of stainless-steel connectors and fasteners designed to provide a superior level of protection and durability against corrosive environments and materials.
Two important environments that may call for stainless steel connectors:
When building in coastal and nearby environments
Depending on weather patterns, locations up to 10 miles from the ocean can be considered at risk for salt (chloride) corrosion (check local requirements)
When projects are in an environment where de-icing salts are used
In colder climates, de-icing salt deposits can be greater than the sea-salt deposits found in coastal areas. Road mist and salt-laden dust can carry salts significant distances from roadways, and they remain there throughout the year.
Stainless-Steel Connector Applications
For exterior wood-to-wood or wood-based materials involving Wet Service, Elevated Service, Ocean/Water Front Service and Uncertain Environments prone to chemicals and chlorides, we offer stainless-steel connectors for a variety of building applications, including:
- Homes built on, or near, the coast
- Outdoor structures like decks, pergolas and fences in coastal areas
- Connecting certain types of preservative-treated lumber
- Applications exposed to fertilizer and other chemicals
- Exposed connectors in areas exposed to de-icing salts
Learn more about general corrosion information.
Always Use Stainless-Steel Fasteners and Anchors with Stainless-Steel Connectors
Even with the protection of stainless-steel connections, structures in corrosive environments can be compromised over time when these connectors are installed with fasteners or anchors that are not stainless steel. Carbon-steel fasteners and anchors with coatings such as hot-dip galvanization will corrode faster than the stainless-steel connectors, creating a weak link that could eventually lead to repairs or failure. Likewise, fasteners or anchors made from lower grades of stainless steel, such as types 304/305 (aka "18-8 stainless"), are also not recommended for use with Simpson Strong-Tie type 316 stainless-steel connectors.
Stainless-Steel Fasteners for Connectors
Stainless-Steel Mechanical & Adhesive Anchors
There are a wide range of available fastener materials and coatings that possess varying levels of corrosion resistance and it is important to identify the right one for the intended environment.
When it comes to anchorage, selecting a material that can withstand the environment is critical. Proper protection comes from materials that are capable of resisting corrosion while maintaining their strength.
Metal connectors, fasteners and anchors can corrode and lose carrying capacity when installed in corrosive environments or when installed in contact with corrosive materials. Learn more about common corrosion issues.