Doxsteel Fasteners

Scientifically proven to be a safer and more cost-effective solution, Doxsteel Fasteners are the smart decision.

In industrial environments such as offshore platforms, all operations are held together by fasteners. With such a critical task resting on the shoulders of these simple machines, it is imperative for the industry to take ownership of how they are made and maintained in order to adapt to, overcome, and prevent corrosion.

Corrosion is the enemy of fasteners. Fasteners seize because oxide accumulates in the thread engagement between the fastener and the nut. When oxidation occurs, removing the fastener requires cutting, torching or grinding, a hard, expensive, and time consuming process known in the turnaround industry as a “death tax.” It requires either having workers operate in dangerous hot bolting conditions or risking the profitability of the company with a lengthy shutdown. In the worst circumstances, bolt failure can lead to catastrophic outcomes.

Unfortunately, there is no way to make a fastener that will last forever. But while every bolt will eventually wear out, there are measures that can be taken at the beginning of its life to extend its life cycle.

Doxsteel Fasteners have been carefully designed through rigorous research and development to specifically address and conquer problems related to seizing in the fastener industry. We know firsthand what it’s like to face an unexpected battle with corrosion in a costly and potentially dangerous situation in the field during turnarounds, and have used that experience- coupled with years of research and development- to deliver a better fastener through a unique process that decreases variability to provide you with certainty that can only come from using the longest lasting fastener on the market.

20. 21. ZERO

Doxsteel Fasteners promise you three measurable benefits that no other fasteners can assure: heavy cost savings, scientifically proven resistance to corrosion, and enhanced safety for your turnaround team.

We often symbolize these benefits with our three important statistics:

20x ROI

With a safer and more predictable turnaround maintenance cycle, you can count on our fasteners to return cost savings in time and labor at least 20 times over. Our upfront costs are consistently competitive; our long-term savings for our customers are completely unparalleled.

21 Years of Fastener Life

The materials and process we use lead to an estimated fastener life of 21 years. Our warranty guarantees your fasteners will not seize for five years, which is an offer no other company in the world has ever made.

See our warranty information.


ZERO Hot Bolting Required

The elimination of hot bolting is a revolution in fastener technology. Hot bolting terrifies turnaround teams and causes balance sheets to bleed, risking both the personal and economic health of your employees and your company. Since Doxsteel Fasteners allow you to schedule maintenance with certainty, they make hot bolting extinct, completely altering the way we think about turnarounds and maintenance.

Learn more about turnaround managers’ true feelings about hot bolting and the steps we take to eliminate it as a process for our customers.


Complying with the Specifications of the Future

All Doxsteel Fasteners comply with API 20E standards and ASTM specifications during manufacturing and preparation for coating. API 20E requires that fastener companies keep documentation to prove compliance so companies can identify bolt failure and can trace the failed bolt back to its heat load and coating batch.

To make sure that our bolts are traceable from the very beginning, we purchase them by the heat load and conduct our own exhaustive Material Test Report (MTR). Our MTR will tell you the chemical composition of the bolt you purchased, its mechanical properties, and information about the coating. The part itself is stamped with a number that will trace it to its heat load.

Learn more about the traceability of our fasteners and coating.

Anyone who works with steel-manufactured parts knows that an MTR is vital to understanding how the part will operate when put to work, which is why we retest every heat load we purchase to compare to its manufacturer’s MTR. This equips us with the information we need to care for our bolts before coating, control all of the coating application variables, and conduct our FELT test.

Learn more about these specifications and how we make sure Doxsteel Fasteners are the safest in the industry

Learn more about these specifications and how we make sure Doxsteel Fasteners are the safest in the industry.


Doxsteel Coating

Doxsteel coating is one of the key differences between a Doxsteel Fastener and one of its competitors. Our Nickel-Cobalt (NiCo) plating provides the longest corrosion protection, a low coefficient of friction, and holds strong against torquing forces and temperatures, preserving the bolt’s integrity in even the toughest environments, such as subsea. Above all, it resists seizing.

Just as important as the coating itself is the electroplating process we use to coat our fasteners. Electrolysis completely covers the entire nut or bolt in a consistent, protective coating. We are able to preserve the function of the thread and apply an even layer of coating on each and every bolt, as well as coat consistently inside the nut.

After the electroplating process is complete, we maintain a close eye on variables that still require strict control measures, such as adjusting conditions to compensate for how a part will affect the temperature of the coating bath. We constantly adjust these conditions to account for changes as the fastener is coated and packaged to make the margin of error as small as possible. Our process does not induce hydrogen in the bolt, preventing embrittlement that has been a major cause of bolt failure in the past.

Read more about our coating process and the benefits it provides.



If a bolt is not traceable, it is difficult to hold anyone accountable for its performance. Traceability is also one of the greatest tools for preventing problems before they start, or conducting effective root cause analysis in case of near misses and worst case scenarios.

The fastener industry has possessed the technology to provide certainty and traceability for years, and with authorities from both the inside and the outside of the industry calling for and developing new specifications to account for this, a traceable fastener is the way of the future. Doxsteel Fasteners has answered the call of the industry by establishing a process that traces the fastener from impetus to application.

Learn more about the traceability of Doxsteel Fasteners.


Designed for the Field

quote“We’re doing testing and operational improvements that nobody’s ever thought about doing. I’ve seen that since the day I entered the Doxsteel laboratory. A Fastener End of Life Test? Who ever heard of that? Doxsteel invented that. And some of these acid tests, some of these seizing tests. No one has ever done them before.”

Doxsteel Vice President and Fastener Expert Steve Cabral

Doxsteel Fasteners are a product of experience, not just theory. Our team’s first-hand struggles in the field were the original catalyst to find a permanent solution to the problem of seized bolts. We have come to learn that while we have made great progress, our work is never done, that we can always make improvements to our current fasteners by examining how we coat, ship, install, and test them. Our research and development team is fully committed to maintaining our market position as the most tested, durable, longest lasting fastener in the world.

Use what you need, then return the rest for credit

Because we believe in our fasteners, we are able to offer a benefit to our customers that no one has ever been able to offer before. When you buy Doxsteel Fasteners, you can enroll in a program that commits you only to permanently purchasing the bolts you use. At any time, you can return standard size fasteners to us for credit in their original, unopened package, reducing the risk of potential extra costs from your procurement and operations processes.

Contact the Doxsteel team today to start a dialogue about how to upgrade your bolts.

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