Fastener Technology

4 Online Bossard Resources You Can Access Anywhere

Bossard page on a laptop

The global threat of COVID-19 continues to transform the way we interact with the world at large. The need for social distancing and other stringent precautions has driven many of our customers to adopt work-at-home for much of their workforce.

Employees at our customers working from home may not be able to access the same portfolio of resources they may have at the office. With that in mind, Bossard offers four powerful online resources you can explore and use for your engineering and design needs.

Technical Resources

You will find a wealth of technical information on our fastener technology, from conversion tables and hardness comparisons to general tolerances and mechanical properties for various fastener designs.

White Papers

Fasteners may seem simple, but the engineering and technology behind them is vastly complex. Bossard’s team of seasoned experts on fastener design and engineering have put together numerous white papers with thoroughly detailed, in-depth information on various fastener topics. Whether you want to know more about surface treatments for fasteners or how heat treatment affects mechanical strength and corrosion resistance, you will find that knowledge and more by checking out our white papers.

CAD Design Suite

To better guide your purchasing decisions, Bossard’s advanced CAD design tool provides 2-D, 3-D, and animated representations of our product catalog. You will also find additional smart features to further support your product and design choices.

Online Calculators

Bossard’s online calculators and converters make it easier for engineers, designers, technicians, and students to quickly convert different units of measure and perform other calculations. You can even download our online calculators and converters to your compatible Android or iOS smartphone in the form of a convenient app, putting a powerful tool at your fingertips no matter where you go. Explore Bossard’s online resources and email us at with any questions, or for more information.

July 10, 2020
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Industrial Revolution: Before and After

A 20th century industrial landscape

The terms “Industry 3.0” and “Industry 4.0” are quite common in manufacturing circles with the latter representing the next evolution in manufacturing. How Industry 4.0 relates to Industry 3.0 and its impact on production processes is the key topic in today’s blog post. 

Before Industry 4.0

So far, there have been four major revolutions in industrial output, starting with the first industrial revolution in the 18th century and the advent of water and steam as a revolutionizing force in mechanical production. The second industrial revolution of the 19th century brought electricity as the driving force behind mass production via the assembly line. The third industrial revolution, also known as Industry 3.0, harnessed advances in Information Technology and electronics to drive automate processes

Each Industrial Revolution followed with it an escalation in automation, culminating in the current state of autonomy. While the automated processes of Industry 3.0 operate largely without human input, they still rely on human controllers to facilitate certain functions essential for continued production. 

The Age of Industry 4.0

The fourth industrial revolution or “Industry 4.0” brings with it a quantum leap in automation and connectivity. By harnessing artificial intelligence, cloud computing, advanced robotics and other smart technologies capable of exchanging and interpreting big data, Industry 4.0 aims to transform manufacturing processes, resulting in reduced costs, increased productivity and improvements in efficiency.  

So, how can Industry 4.0 take your business to the next level? Bossard’s Smart Factory Logistics harnesses the Industrial Internet of Things to create a seamless, streamlined supply chain and logistics solution for your enterprise. With solutions like ARIMS and its ability to help you manage material flow in real-time, Smart Factory Logistics offers a clear roadmap for transforming your manufacturing processes. You can also count on Bossard’s team of seasoned specialists to customize and optimize your systems based on your specific needs. Contact us today at and learn how Bossard’s Smart Factory Logistics can deliver impressive results for your company.

June 19, 2020
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How Are Fasteners Made?

As a global leader in modern fastening technology, Bossard takes pride in perfecting its high-quality product solutions for your applications. While the Bossard product portfolio runs the gamut from multifunctional screws to self-clinching fasteners, these products are typically made using one of three methods: machining, cold forming, and hot forging.


Machining is the method of choice for creating non-standard fasteners in small quantities. The process starts with a round or hex bar placed on a lathe. Throughout the machining process, the required thread and shank geometry is machined from the bar while additional steps, including threading, drilling, and slotting, are taken to create the final product.

The machining process allows manufacturers to create precise fasteners with complex geometry and tight tolerances. The process is also time-consuming and wastes a lot of material, making it unsuitable for high-volume production.

Cold Forming

The most common method of creating standard fasteners is the cold forming process. This method starts with a coil of wire which is straightened and sheared to the appropriate length. The resulting blanks are then fed into a bolt maker and extruded through a series of dies, creating the proper geometry for the fasteners. The fastener heads are then shaped using a series of progressive dies while the external threads are formed on the shank using roll dies. 

Speed and reduced waste are two major advantages of the cold forming process. Manufacturers can produce thousands of parts per hour while minimizing costs associated with material waste. But the machines involved in the cold forming process take considerable time to set up, making small production runs unfeasible due to time and cost constraints.

Hot Forging

Hot forging is the go-to method for producing fasteners that can’t be produced via cold forming or machining, including fasteners with very large diameters or lengths. In this process, bar stock is partially heated to very high temperatures and then fed into a press that forms the head shape in one die. This process is often expensive and time-consuming, which is why it’s typically reserved for creating oversized parts. Have other questions about how fasteners are made? Contact us today at for more information.

June 12, 2020
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Can I Reuse Fasteners?

A stack of fasteners from Bossard

One of the most common questions we hear at Bossard involves fastener reuse. While there are plenty of applications and scenarios where reusing existing fasteners makes sense, the answer isn’t always as straightforward. Depending on their application, fasteners can experience a broad range of external loads, making reuse an issue that requires careful consideration.

Simple Guidelines for Reuse

One major factor that determines a fastener’s reusability is its function. Before making your decision, consider these important questions:

  • Will a joint failure pose any danger to people?
  • Will a joint failure incur any significant costs?

If you’ve answered “yes” to either question, then you’re better off replacing the fastener in question instead of reusing it. Critical applications often require fasteners to carry a specific load achieved by a measured torque. Any damage to the threads or the surface finish could change the load amount transferred to the fastener when torqued to a specific value.

Contamination caused by dirt and debris or external lubrication can also change the specific loading, which could also result in problems later. Under these circumstances, using new fasteners prevents these issues from occurring by ensuring the fastener can achieve its proper loading.

If you’ve answered “no” to both questions mentioned above, then it’s possible to reuse the fastener in question. Before you reuse any fasteners, make sure the mating surfaces are clean and free of any damage or contamination before reinstallation. Always reinstall fasteners according to the manufacturer’s instructions, if applicable.

Common Cases for Fastener Reuse

Fastener reuse isn’t out of the ordinary for many applications. Take automobiles, for instance. Lug nuts are regularly reused on vehicle wheels without any ill effects. But this use case only works if they’re re-torqued properly according to the manufacturer’s instructions. For instance, lug nuts often require re-tightening to the proper torque specification after 50 miles of driving.

To learn more about fastener reuse or if you have any more questions, get in touch with us at

June 05, 2020
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The Pros and Cons of Digitalization

A worker organizers products

Digitalization, or the use of technology to improve how work gets done, may be the wave of the future. But at Bossard, we understand how the process can be fraught with challenges and uncertainty. To make informed decisions about this path, check out its pros and cons.

Digitalization Pros

Digitalization offers the following benefits:

  • Increased Productivity. While digitalization centralizes data, it allows retrieval from any desktop, laptop, tablet, or smartphone in your plant. Information goes to where your employees need it and exports to other applications for analysis, which can provide better insights. Your workers don’t have to go searching for what they need and entering it many times into different physical locations, which can cause errors. The result is efficiency, time savings, and better productivity.
  • Better Customer Experience. With your customers spending more and more time in the digital space, it makes sense to offer them seamless access to the same information that you have. Purchasing becomes easier for them and you when your employee intervention becomes unnecessary. You also analyze your customers’ digital patterns to offer them experiences tailored to their needs.
  • Optimized Supply Chain. Digitalization optimizes your supply chain by reducing the time it takes to fulfill customer requests and request restocking. Leaner manufacturing reduces your time to market.

Digitalization Cons

The following are some of the challenges of Digitalization:

  • Implementation. Investing in digitalization takes plenty of time and money. But you can mitigate the effort by digitizing one area at a time step-by-step rather than transforming everything at once. You will still see immediate benefits even if you take a piecemeal approach.
  • Employee Uncertainty. Your employees may be eager to embrace the advantages of digitalization, but they may be uncertain about how they will learn the necessary skills. Through our digital tools, Bossard can customize its training to each employee’s learning style and give them the support they need to succeed.

Want more information or help on digitalization for your organization? Please contact us today at

May 22, 2020
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What is the difference between tensile strength and yield strength?

A bolt is held

Two of the terms you encounter when considering fasteners are tensile strength and yield strength. Both reveal the strength of the fastener. But, despite the similarities of these terms, they are not interchangeable. We at Bossard want to explain the differences, so you can make an informed decision when choosing fasteners.

  • You don’t want a fastener that is too weak for your application.
  • But you also don’t want a fastener that is too strong because you’re spending extra money on strength that you don’t need.

Why is a fastener like a spring?

A fastener like a bolt behaves in the same way as a spring.

  • When you use a fastener to clamp down two components, they act as a compression spring.
  • Meanwhile, the bolt acts as a tension spring and stretches when you apply force to it.

If you do not overload the bolt, it springs back to its original length when you release the load. But, if you overload the bolt beyond its yield point, it does not return to its original shape and suffers permanent deformity.

Coming to terms

The point before which the fastener fractures indicates the tensile strength. You want to focus on this number when choosing fasteners that must sustain huge forces.

Yield strength generally comprises 80 or 90 percent of tensile strength. Yield indicates the point at which the fastener starts deforming. A useful way to determine the yield strength of a bolt based on its tensile strength is to examine its property class.

  • Property class of 10.9: The 9 after the decimal point shows that the yield strength comprises 90 percent of tensile strength.
  • Property class of 8.8: The 8 after the decimal points shows that yield strength comprises 80 percent of tensile strength.

Proof Load

A third term that’s often associated with fasteners is proof load. Proof load is the maximum load you can apply to a fastener before it permanently deforms. For Bossard fasteners, you can find the values for tensile strength, yield strength, and proof load in the technical section of our website.

For more information about tensile strength and yield strength, contact us at today.

May 15, 2020
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Features of the Accuride® 9300 Series

Premium ball bearing slides

Bossard is proud to present premium ball-bearing slides crafted by Accuride® International. These high-quality, engineered products work efficiently with a wide range of inventory control applications ranging from storage onboard vehicles in transit to stationary storage cabinets. The 9300 series, forged for heavy-duty movement solutions, has the following features:

  • RoHS compliant
  • Accommodates heavy duty loads rated up to 600 pounds with lengths up to 60 inches and widths of 42 inches
  • Options available to lock in place open (lock-in) or lock closed (lock-out)
  • Disengage the slides that lock with a simple press of a tab when you want to open or close the drawer
  • Offers convenient access to all your drawers contents with the full-extension three-member design
  • Non-disconnecting design
  • Mounts flat or on the side for maximum flexibility in your design
  • Shock absorbing silencing bumper smooths and refines movement while lowering impact noise when closing the drawer
  • Limited Lifetime Warranty

We offer the following 9300 models:

  • 9301E: This slide handles mobile loads up to 360 pounds and stationary loads up to 600 pounds. This slide does not lock in or out unless you add the optional Accuride® CBHANDLE Kit.  AWI and BHMA compliant.   
  • 9307E: This slide features a front latch lock-out that keeps drawers and trays in an open position for extended access over time. The enhanced spring and lever design improves reliability with repeated use.
  • 9308E: To secure vehicle compartments in an opened or closed position this slide also integrates a lock-out feature, as well as a lock-in feature to ensure drawers stay closed during transit.
  • 9308-E5: This two-slide set consists of the 9308E with its lock-in and lock-out feature and the 9301E.
  • 9322E: Created with pocket and bayonet mounting, providing tool-less installation. For non-locking motion.
  • 9328E: Also featuring pocket and bayonet mounting for easy installation, this slider locks in and out through a front-latch release.

For more information about the Accuride 9300 Series, email us at today.

May 01, 2020
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Why It’s Important to Test Your Fastener Joints Before Manufacturing

Bossard fastener

Aside from the potential risk of injury or death, bolted joints that fail can slow down or stop your production line. You could temporarily change to new screws to get things going again but that does not provide a permanent solution.

To prevent future problems, you need to uncover the root cause of the failure, which can include the following.

  • Change of friction conditions. An increase may damage the fastener. A decrease may separate joints.
  • The tightening torque may be too high, which causes the fastener shank to fail or strip bolt threads. The tightening torque may be too low, which prevents joint tension from meeting design requirements.
  • Loss of preload due to a setting change, which loosens fasteners and separates joints.
  • Corrosion, such as rust, due to the environment or the use of inadequate materials, which damages the fasteners.
  • Operation loads that stress the fastener because they are higher than what the joint was designed for.

At Bossard, we can rely on our test laboratories to uncover the root cause through extensive failure analysis. Only then can we work with you in defining a solution that prevents future failures. Among the many Expert Test Services that we can provide during such analyses are the following:

  • Bolted Joint Analysis: By directly measuring the clamping force in a bolted joint while monitoring the torque and angle of the fasteners, or measuring bolt stretch with ultrasonic equipment, we can define the torque/tension relationship to determine what is going on in your assembly and use this information to recommend solutions.
  • Joint design calculation can determine the load and stress on bolted joints by calculating such factors as friction variation, contact surface pressure, assembly method, and expansion coefficient. The MDESIGN tool is what we base our calculations on.

Find out more about how we can test your joints before manufacturing by contacting us at

April 10, 2020
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All About Fastening Solutions for the Railway Industry

A sunset with power lines

Lightweight materials help trains go faster, function more reliably, and arrive at their destinations on time. Also, shorter production times and leaner maintenance are necessary to keep up with the increasing demands of the railway sector.

Our engineers at Bossard understand your need for efficiency and productivity and are eager to help you achieve both by connecting you to innovative fastening developments. If your application demands a solution that does not yet exist, we can create one with you, tailored to your unique situation.

You can look forward to the following advantages when engaging with Bossard:

  • One-Stop-Shop. We meet all your application needs by providing reliable fasteners that are ideal for mechanical purposes as well as train construction.
  • Optimal Delivery Conditions. With more than 70 subsidiaries worldwide, you can count on short delivery and response times. When you need a part right away, you can check our online catalog for all our catalog products. If you’re not finding what you need, our engineers can customize a solution for you.
  • Engineered Parts. With almost 200 hundred years of fastening technology behind us, our in-house engineers have the know-how to handle any kind of application involving joints, bolts, nuts, screws, and washers. We can also take advantage of an international network of specialized partner companies.
  • Our Own Testing Labs. We make use of our own ISO/IEC 17025-accredited testing labs in 10 countries around the world. Whether tests require mechanical, optical, geometric, or chemical methods, we can provide the facilities and expertise.
  • Smart Factory Logistics. Our B- and C-part management strategies and technologies are reliable, smart, and lean, and integrate well with the emerging Internet of Things.
  • Professional Consulting. Whether you need a better way of joining product components or are looking for a more efficient assembly strategy, our comprehensive engineering services can find an answer. Once we have a fastening solution in place, we can also train your staff on how to best use it.

Find out more about how we can meet your railway sector needs by reaching out to us today at

April 03, 2020
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bigHead® releases Core range Technical Guide

A Bossard composite

Bossard understands how hard it is to predict whether a fastener will perform properly under load when you work with composites. You must make educated guesses or run time-consuming trials to determine how much load a bonded or embedded fastener can handle, or how it can fail.

Fortunately, bigHead® offers a core range of 156 products. This complete range of fasteners is designed for both bonded and embedded applications, forged from carbon or 316 stainless steel, and available in small, medium, or large sizes.

More importantly, the bigHead® core range comes with a technical guide that makes it easier to identify critical design considerations in your composite application and select the proper bigHead® fastener for the joint. This guide puts the following needed information within easy reach:

  • Performance data that includes size, weight, and maximum tensile load for each of the three head types.
  • Product range, such as the threaded collar or threaded stud, their available lengths, and examples of their product coding.
  • Flexible process integration options such as post-process installation, or co-process integration.
  • Critical considerations during design and assembly include the gaps between adjoining components, clearance holes in adjoining components, and the thread friction coefficient and/or modifiers.

Want more technical information about assembly methods in composite applications? Contact us today at

March 27, 2020
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