Which anti-corrosion finish should you choose for your fastening components? At OSN, anything is possible
For fastening components, the base material is just as important as the surface finish. A bolt, nut or washer may be manufactured from carbon steel, stainless steel or special alloys, but its performance against corrosion, wear or certain chemical agents will depend largely on the treatment applied to its surface.
At OSN, we work with standard solutions and custom developments, offering a wide range of finishes to meet the requirements of each industrial application. These range from cost-effective treatments for general use to high-performance coatings for marine, automotive, energy and heavy machinery environments.
Why apply a surface finish?
- Protect against corrosion.
- Improve chemical resistance.
- Reduce wear and friction.
- Prevent galling between components.
- Improve electrical conductivity.
- Provide a specific aesthetic finish.
- Meet technical specifications or industry standards.
Selecting the correct coating can multiply the service life of the fastening component and significantly reduce maintenance costs.
We can offer a wide range of finishes and surface treatments for fasteners and fastening products, such as bolts, washers, nuts, clamps and other components. Below is a selection of the most commonly used finishes; however, we can also assess specific solutions according to the material, application and required level of protection.
Finish
Primary purpose
Description
Black Oxide
Blackening
Galvanizing
Standard zinc plating
Passivated zinc plating
Blue-passivated zinc plating
Yellow zinc plating
Bichromate zinc plating
Dichromate zinc plating
Zinc flake coating
Delta Protekt®
GEOMET® 321
Mechanical bichromate zinc plating
NERINOX®
Beryllium Copper
Conclusion: a comprehensive solution for every project
At OSN, we can support the customer throughout the entire component development process: from design and definition of its technical characteristics to the selection of the raw material from among numerous steel types and grades, as well as the choice of the surface finish best suited to the operating conditions and required level of protection.
We also offer packaging solutions tailored to each customer’s assembly, handling and supply requirements, such as components supplied in strips, special bags, customised quantities per bag, specific labelling and other configurations on request. In this way, we facilitate product integration into the assembly line and help optimise logistics and production processes.
