The Expert Team puts together their know-how and application experience in fastening especially for you. 
Have a look at these interesting white papers.

Selecting a fastener finish

7 tips to select your fastener finish

Surface treatment plays a significant role in choosing the right fasteners. This white paper will investigate the six most-used coatings (zinc electroplating, zinc/nickel plating, mechanical zinc plating, zinc flake coating, hot dip galvanizing and epoxy coating) using seven criteria.

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Surface Finishing in Stainless Steel

Surface finishing in stainless steel 

This paper will show the importance of passivation, polishing medium and surface profile on the corrosion resistance of stainless steel. 

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With the increased importance of lightweight construction, designers face the challenge of additional holes needed for assembly. These not only affect the design, but also impact the maximum possible load. Proven Solutions already exist!

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The notion of "appearance" incoatings


The notion of "appearance" in coatings

Corrosion-resistance, strength, stability. In addition to these classic properties of mechanical connections, often an additional aspect plays an important role: Aesthetics. 

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heat treatment of fasteners

Heat treatment of fasteners 

Heat treatments allow, on the one hand, only certain processing methods for materials. On the other hand, they are used to increase mechanical strength (ductility) and, for some alloys, corrosionresistance. 

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Why friction in screw connections is crucial for process capability

«Lean Production» is the current trend and represents even leaner and more target-oriented processes. Solutions for higher efficiency, lower consumption and longer service lives are being researched worldwide. When assessing new materials or processes for surface treatment or finishing, tribological properties such as friction, lubrication and wear are almost always a factor.

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DIN 7500

DIN 7500 – the first choice fastener for many situations

The DIN 7500 standard was first published in the late seventies and has been updated a number of times since. Simultaneously with the publication of DIN 7500-2 “guideline values for hole diameters” the standard for screws was named DIN 7500-1. However, most often the screws are just referred to as DIN 7500. Discover the reason why DIN 7500 screws have greatly increased in popularity over the years and continue to be the first choice fastener for many situations.

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The challenge to find the right fastener solution for composites 

As composite materials grow both in range and volume of applications, the challenge to find the right fastening solution continues to grow. This white paper explores some trusted fastening solutions within this fast growing market.

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Hydrogen embrittlement

Hydrogen embrittlement - the silent killer 

The embrittlement of metal caused by hydrogen atoms is not new. It was first reported back in 1875, more than a century ago. Nonetheless the awareness of the risk of hydrogen embrittlement, especially in mechanical fasteners deserves more serious attention.

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Reuse fastener

Should fasteners be reused?

The reuse of screws, nuts and bolts sounds as though it should save costs, but it does not. In this white paper, Martin Rüedy from the Bossard Expert team does not recommend the reuse of fastening elements in relation to five different factors.

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What is corrosion?

Corrosion can occur whenever different metal components are in contact each other. What immediately comes in mind when we hear about corrosion, is the brown-reddish piece of metal. When we ask the expert, the answer is not quite as simple. Corrosion can be in different colors and forms. So what really is corrosion? What causes it? How to avoid it?

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Loosening joint

Loosening joint - don't lose it! 

From power generation to automation, transportation systems to recreational and sports equipment, testing and measuring equipment to healthcare technology, digital gadgets to children’s toys, threaded fasteners are used to assemble these products. Threaded joints have a lot of benefits to offer and also weaknesses. One of the challenges in threaded joints, is self-loosening.

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Galling stainless steel fasteners

Galling of stainless steel fasteners 

Are your connecting components regularly subject to seizing and so frequently cause a problem? In this professional article you can not only learn the causes and preventative measures, but targeted solutions for preventing cold welding.

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connecting components

 Making the right choice

The primary function of connecting components, as is well known, is to guarantee easy assembly and maintenance. Development engineers are regularly faced with the challenge of finding the right connecting component for a new connection job.

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