The choice between “eco-friendly” and “quality” is a thing of the past.
The Fusion of Mechanical Zinc Plating and Cold-Formed Round Washers
In today’s landscape, where compliance with environmental regulations and long-term component reliability are simultaneously required, the combination of mechanical zinc plating and cold-headed round washers is attracting attention as a choice that balances practicality with environmental performance.
Reasons Why We Are Chosen
Unwavering Quality Through a Patented Process.
Flat rond washers offering excellent dimensional accuracy, strength, and flatness by scrapless processing.
⇒ Consistent quality.
The peace of mind provided by mechanical galvanizing
A surface treatment offering excellent corrosion resistance, freedom from hydrogen embrittlement, and reduced environmental impact.
⇒ Ideal for applications requiring safety and reliability.
A “smarter cost choice” than stainless steel.
Optimize material costs without compromising performance.
⇒ Ideal for re-evaluating components that were previously over-specified.
Primary uses
Construction and civil engineering components
Industrial machinery and equipment parts
Transportation equipment-related parts
Infrastructure-related components
Various fastening components
Sole Importer for Japan：Archer Company
https://archer-company.com/en/st-products-6/
An eco-friendly choice. Towards a sustainable future.
Mechanical plating developed as an alternative to hot-dip galvanizing.
Compared to hot-dip galvanizing, mechanical plating generates only one-third of the CO2 emissions.
| Mechanical galvanizing | Hot-dip galvanizing | |
| Photo |  |  |
| CO2 Emissions / Kg CO2 e/kg | 0.08 | 0.24 |
| Chemicals Used | Zinc Powder and Water Only | Uses Grade 1 or higher distilled zinc ingots. Because the zinc bath is heated to 430–470°C, CO2 is generated. |
| Plating Wastewater | Reusable | Discharged into rivers and sewer systems in compliance with regulations. Cannot be reused. |
Mechanical galvanizing achieves CO2 emissions approximately 70% lower than those of hot-dip galvanizing.
| Mechanical galvanizing | Hot-dip galvanizing | |
| Corrosion resistance | Environmentally friendly, with durability equal to or better than hot-dip galvanizing. | Good results can be expected under favorable environmental conditions, but the service life is significantly shortened in areas such as coastal regions. |
| Appearance | Beautiful, with a uniform surface finish. | The surface has significant irregularities. |
| Concerns about embrittlement | No hydrogen embrittlement due to room-temperature processing. | There are concerns regarding embrittlement due to hydrogen embrittlement in heat-treated products. |
| Environmental resistance | Lead-free and RoHS compliant Environmentally friendly; requires no wastewater treatment. | Contains lead and cadmium; RoHS non-compliant. Wastewater treatment required for environmental protection. |
Recommended for customers with below concerns
・Those seeking a product combining durability and visual appeal.
・Customers experiencing appearance quality issues with conventional hot-dip galvanized products.
・Those seeking to cut maintenance expenses for long-term parts.
・Customers using hot-dip galvanized washers who are concerned about seating instability.
Mechanical zinc plating minimizes the risk of parts sticking together.
It is particularly suitable for washers and small flat parts.
We also offer mechanically zinc-plated products other than washers,
so please feel free to contact us!