regionSelector

<h1>Materials and Coatings Available for Fasteners</h1>
<div class="notice">
  <div class="icon icon-info"></div>
  <div class="notice__content">
    Simpson Strong-Tie fasteners feature a wide range of materials and coatings designed to meet specific performance criteria. It is important to select a material and/or coating that is suitable for the intended application and environment based upon factors such as corrosion resistance and mechanical properties of the material. For more information on selecting fasteners based upon corrosion resistance, please see
    <a
      href="/products/product-use-information/corrosion-information/guidelines-for-selecting-proper-materials-and-coatings"
      >Guidelines for Selecting the Proper Materials and Coatings</a
    >.
  </div>
</div>

<p>
  Simpson Strong-Tie Company Inc. welcomes the opportunity to provide assistance in fastener selection. Please call (800) 999-5099 in the event that technical support is needed.</p>
<h2>Corrosion Resistance Classifications</h2>
<br>
<h3>Low Level of Corrosion Resistance</h3>
<br>

<div class="row">
<div class="col-md-3 col-sm-3"><img src="https://ssttoolbox.widen.net/content/ao4vzk97mc/jpeg/F_SDWS_InstPho_Pho_Inst_InteriorLedger_C0.jpg?crop=true&anchor=564,0&q=80&color=ffffffff&w=809&h=1365" width="300" height="" border="">
</div>
  <div class="col-md-6 col-sm-6">
    <h4>Blue-Bright Zinc</h4>
    <p>
      Electroplated zinc applied in accordance with ASTM F1941. In the ASTM B117 salt spray test, blue-bright zinc provides at least 36 hours of corrosion protection before the first appearance of red rust. </p>
      <br>
    <h4>Clear Zinc</h4>
    <p>
      Electroplated clear zinc is applied in accordance with ASTM F1941. In the ASTM B117 salt spray test, clear zinc provides 24 hours of corrosion protection before the first appearance of red rust depending on coating thickness. </p>
      <br>

    <h4>Electrocoating (E-Coat)</h4>
    <p>
      Electrocoating uses an electrical current to deposit the coating material onto the fastener.After application, the coating is oven cured. Electrocoat is intended for dry service, low-corrosion applications and is suitable for use with FRT in medium-corrosion,  dry-service applications.</p>
      <br>
    <h4>Gray Phosphate</h4>
    <p>
      Gray phosphate provides a minimum level of corrosion resistance and is intended for dry, low-corrosion applications. </p> </div>
</div>


<div class="row">
  <div class="col-md-6 col-sm-6">
    <h4>Black Phosphate</h4>
    <p>
      Black phosphate provides a minimum level of corrosion resistance and is intended for dry, low-corrosion applications.</p>
  </div>
  <div class="col-md-6 col-sm-6">
    <h4>Yellow Zinc</h4>
    <p>
      Electroplated zinc applied in accordance with ASTM F1941. In the ASTM B117 salt spray test, yellow zinc provides at least 72 hours of corrosion protection before the first appearance of red rust.</p>
  </div>
</div>


<div class="row">
  <div class="col-md-6 col-sm-6">
    <h4>Class 1 Zinc Electroplate</h4>
    <p>
      Electroplated zinc applied in accordance with ASTM A641, Class 1. This is an electroplated zinc coating that provides a low level of corrosion resistance. The Class 1 coating has no specified red rust performance criteria in the B117 salt spray test. </p>
  </div>
  <div class="col-md-6 col-sm-6">
    <h4>Type 410 Stainless Steel</h4>
    <p>
      Type 410 stainless steel is a low-carbon martensitic grade of stainless steel that can be hardened and is inherently magnetic. This material provides corrosion resistance in mild atmospheres and many mild chemical environments.
    </p>
  </div>
</div>


<div class="row">
  <div class="col-md-6 col-sm-6">
    <h4>Coated Zinc</h4>
    <p>
      This coating system consists of an electroplated zinc base layer with an E-Coat top coat. It provides corrosion resistance that is adequate for low corrosion environments. In ASTM B117 salt spray testing at 500 hours of exposure, fasteners with this coating have an average red rust of less than 5%. </p>
  </div>
  <div class="col-md-6 col-sm-6">
    <h4></h4>
    <p>
    </p>
  </div>
</div>

<br><br>
<h3>Medium Level of Corrosion Resistance</h3>
<br>

<div class="row">
<div class="col-md-3 col-sm-3"><img src="https://ssttoolbox.widen.net/content/ij45eymfb6/jpeg/F_DSVT3_InstPho_Pho_Inst_DSV-WoodScrew-Tan-DeckBoard-Makita_C0.jpeg?keep=c&crop=yes&color=ffffff00&quality=80" width="300" height="" border="">
</div>

  <div class="col-md-6 col-sm-6">
    <h4>Quik Guard<sup>&reg;</sup> Coating</h4>
    <p>
      Quik Guard coatings are proprietary coating systems that consist of an electroplated zinc base layer and organic top coats. The corrosion resistance is equivalent to hot-dip galvanization (ASTM A153, Class D) in some exposures and in most non-marine environments, and described by ICC-ES, AC257 Exposures 1 and 3.
    </p><br>
    <h4>Double-Barrier Coating</h4>
    <p>
      The Simpson Strong-Tie double-barrier coating is a proprietary coating that provides a level of corrosion resistance that is equivalent to hot-dip galvanization (ASTM A153, Class D) in most non-marine environments and as described by ICC-ES, AC257 Exposures 1 and 3.
    </p><br>
    <h4>Hot-Dip Galvanized, ASTM A153, Class D</h4>
    <p>
      The Class D hot-dip galvanization is a coating that meets the requirements of ASTM A153, Class D, which is a minimum average of 1.0 oz/ft<sup>2</sup> [305 g/m<sup>2</sup>] of zinc applied by a hot-dip process. Hot‑dip galvanized fasteners are compliant with the 2018, 2021 and 2024 IBC and IRC.</p>
  </div>
</div>


<div class="row">
  <div class="col-md-6 col-sm-6">
    <h4>Mechanically Galvanized, ASTM B695, Class 55</h4>
    <p>
      This is a mechanically applied zinc coating that meets the requirements of ASTM B695, Class 55, which is a minimum average thickness of 55 microns with a supplementary overcoat. Screws with a Class 55 coating meet the requirements for use in preservative‑treated and fire‑retardant‑treated wood as stated in the 2018, 2021 and 2024 IBC and IRC.</p>
  </div>
  <div class="col-md-6 col-sm-6">
    <h4>N2000<sup>&reg;</sup> Mechanically Galvanized</h4>
    <p>
      This is a mechanically applied proprietary zinc coating with a supplementary overcoat. In the ASTM B117 salt spray test at 1000 hours of exposure, fasteners with the N2000 coating exhibit average red rust less than 15%. </p>
  </div>
</div>


<div class="row">
  <div class="col-md-6 col-sm-6">
    <h4>C-3 Mechanically Galvanized</h4>
    <p>
      A mechanically applied coating that is zinc with a minimum of 20% tin in accordance with Australian Standard AS3566.2. In the ASTM B117 salt spray test at 1,000 hours of exposure, fasteners with the C3 coating exhibit average red rust of less than 2%. </p>
  </div>
</div>

<br><br>
<h3>High Level of Corrosion Resistance</h3>
<br>

<div class="row">
<div class="col-md-3 col-sm-3"><img src="https://ssttoolbox.widen.net/content/zs7doid1nk/jpeg/F_S10250WP_InstPho_Pho_Inst_Deck-Drive-DWP-Flat-Head-305-Decking_C0.jpeg?keep=c&crop=yes&color=ffffff00&quality=80" width="300" height="" border="">
</div>
  <div class="col-md-6 col-sm-6">
    <h4>Types 304 and 305 Stainless Steel</h4>
    <p>
      Types 304 and 305 stainless steels are nickel-chromium austenitic grades of stainless steel. Types 304 and 305 stainless steels are not hardened by heat treatment and are inherently nonmagnetic. </p>
    <p>
      They provide very good corrosion resistance and are suitable for use in many corrosive environments. Fasteners made from Types 304 and 305 stainless steels are compliant with the 2018, 2021 and 2024 IBC and IRC.
    </p>
  </div>
  
</div>


<h3>Severe Level of Corrosion Resistance</h3>
<br>

<div class="row">
<div class="col-md-3 col-sm-3"><img src="https://ssttoolbox.widen.net/content/ny68vy5n1d/jpeg/F_SDWS27xxxSS_InstPho_Pho_Inst_TIMBER-StanlessSteelScrew-ocean-Boardwalk_C0.jpg?crop=true&anchor=290,0&q=80&color=ffffffff" width="300" height="" border="">
</div>
  <div class="col-md-6 col-sm-6">
    <h4>Type 316 Stainless Steel</h4>
    <p>
      Type 316 stainless steel is a nickel-chromium austenitic grade of stainless steel with 2-3% Molybdenum. Type 316 stainless steel is not hardened by heat treatment and is inherently nonmagnetic. It provides a level of corrosion protection suitable for severe environments, especially environments with chlorides. Type 316 stainless‑steel fasteners are compliant with the 2018, 2021 and 2024 IBC and IRC.</p>
      <br> 

    <h4>Hot-Dip Galvanized, ASTM A153, Class C</h4>
    <p>
      Class C hot-dip galvanization is a coating that meets the requirements of
      ASTM A153, Class C, which is a minimum average of 1.25 oz/ft<sup>2</sup>
      [381 g/m<sup>2</sup>] of zinc applied by a hot-dip process. Hot‑dip galvanized fasteners are compliant with the 2018, 2021 and 2024 IBC and IRC.
    </p>
  </div>
</div>


<div id="passivation" class="notice notice--success notice--alt">
  <div class="notice__content">
    <h4>* Passivation of Stainless-Steel Fasteners</h4>
    <p>
      Stainless steels are designed to naturally self-passivate by forming a
      chromium oxide layer. Corrosion resistance of some stainless-steel
      fasteners is enhanced by a post-fabrication passivation process. The
      passivation process uses an acid bath to strip free iron from the surface
      and an oxidizer to force conversion of the surface chromium to the oxide
      form.
    </p>
  </div>
</div>


<div class="notice">
  <div class="icon icon-info"></div>
  <div class="notice__content">
    <h4>General Note About Salt Spray Testing</h4>
    <p>
      Salt spray testing in accordance with ASTM B117 is not intended to
      represent real-world corrosion performance of fastener coatings. It should
      only be used for comparative evaluation between like products. Many
      variables may affect the outcome of the salt spray test such as base
      material, fastener features, coating and the material where it is
      installed.
    </p>
  </div>
</div>

brxsaas:HTMLContentFieldGroup-wYoMN

locations

A map and contact information for our branches, offices, factories, distribution centers and warehouses located around the world.

Locations

footer

main

Connectors

Anchoring Systems

Fastening Systems

Structural Steel

Lateral Systems

Repair, Protection, & Strengthening Systems

Reinforcement Alignment

Equipment

Products

Industry Solutions

Digital Solutions

Outdoor Living

Project Ideas & Inspiration

Solutions & Projects

PDF Literature & Catalogs

Software & Apps

CAD Drawings

Code Report Finder

Product Submittal Generator

Video Library

Product Installer's Guide

Resource Center

Local Workshops

Online Courses

Recorded Webinars

Builder Learning Center

Upcoming Shows & Events

Training & Education

Contact Us

Product Use Information

FAQs

Customer Survey

Customer Service

xm:banner

xm:large

xm:largesquare

xm:mediumsquare

logo_sst_rgb.svg

hippogallery:original

xm:small

xm:smallsquare

hippogallery:thumbnail

bottomMenu

container

brxsaas:ctaLink

brxsaas:cta

newsletter-form

Subscribe to Our Newsletter

brxsaas:items

North America

Oceania

Other

Europe

region-selector

Simpson Strong-Tie International Sites

html-content-ujMKV

dealerlocator

Explore our dealer locator application to find an official dealer of Simpson Strong-Tie products near you in the United States and Canada.

Dealer Locator

newsletterForm

materials-and-coatings-for-fasteners

A list of the materials and coatings for corrosion resistance available for our fasteners.

Materials and Coatings Available for Fasteners

footer-menu

Our Company

Vision, Mission, and Values

Research, Testing & Innovation

Newsroom

Shows & Events

Investor Relations

About Simpson Strong‑Tie

Working at Simpson Strong‑Tie

Inclusion and Belonging

Job Openings: North America

Job Openings: Vietnam

Careers

Give Back

Habitat for Humanity

Strong-Tie Undergraduate Fellowship

Social Impact

Corrosion Information

Discontinued Products

Federal Procurement & Domestic Content Programs

Product Use & Corrosion Info

Building Strong Blog

Structural Engineering Blog

Strong Conversations Podcast

Blogs & Podcast

sst-blank-layout

header

home

Simpson Strong-Tie | Homepage

sitemap-cta

Privacy Policy

User Agreement

Limited Warranties

Terms & Conditions

literature-and-links-canada

Resources including links to literature and information for structural residential and commercial building in Canada.

Literature and Links for Canada