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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.

When designing strong and durable anchorage solutions for corrosive environments, the two most-commonly considered materials are types 303/304 and 316 stainless steel. And while type 316 stainless steel is often specified due to its superior corrosion-resistant properties, types 303/304 may be sufficient in many applications where environmental conditions are less extreme.

Type 303/304

A cost-effective solution for less extreme applications where the environment is often wet, moist or damp. Not recommended for use near ocean fronts or where corrosive agents are present.

  • Stadium seating
  • Curtain walls
  • Clean rooms
  • Central utility plant facilities
  • Food-processing facilities
  • Ledger bolts for decks
  • DOT signs and fixtures
  • Agricultural facilities
  • Cooling towers
  • Pulp and paper mills
  • Scaffolding
  • Parking structures
  • Tunnels
  • Balconies
  • Refineries
  • Breweries and wineries
  • Fencing
  • Outdoor railings
Stadium Seats
Ledger Bosch Impact Driver
Food Processing

Type 316

The optimal choice for applications in corrosive or extreme environments such as coastal locations exposed to salt air or salt water, those where de-icing salts are used or when chemical or corrosive solutions are present.

  • Wastewater treatment
  • Fertilizer storage buildings
  • Sill plates in coastal environments
  • Marine/port restoration
  • Light rail (transportation)
  • Parking structures
  • Tunnels
  • Balconies in coastal environments
  • Outdoor railings in coastal environments
Water Treatment Plant
Seaside Stairs
Pier Sunset

Type 410

Considered to have a relatively low level of corrosion resistance compared to other stainless steel grades, it is the best choice for products that need to be hardened in order for threads to cut into concrete.

Stainless-Steel Mechanical Anchors


Stainless-Steel Fasteners

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.

Stainless-Steel Connectors

Simpson Strong-Tie offers a wide range of type 316 stainless steel connectors and fasteners designed to provide a superior level of protection and durability against corrosive environments and materials.

Stainless-Steel Connectors

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.