Steel hexagon socket bolt (cap bolt) trivalent chromate black.
By applying an alloy electroplating of zinc and nickel (zinc-nickel plating) to the base material, it exhibits superior corrosion resistance in saltwater and outdoor exposure compared to conventional zinc plating. It also has excellent heat resistance and is characterized by being hard and resistant to scratches. Hexagon socket bolts are also in stock.
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basic information
Size range: M2-M12
Price information
Delivery times vary depending on the quantity. Same-day shipping is possible at the earliest. Please feel free to contact us.
Delivery Time
※Delivery times vary depending on the quantity. Same-day shipping is possible at the earliest. Please feel free to contact us.
Applications/Examples of results
Steel is widely used as a material for screws due to its easy availability, strength, and toughness. Based on carbon steel, which primarily consists of iron (Fe) and carbon (C), alloy steels that have been heat-treated or contain additives such as chromium and molybdenum are used according to their applications, considering factors like shape, strength, and corrosion resistance. Trivalent chromate is a surface treatment that serves as an alternative to chromate plating, providing corrosion resistance equal to or greater than traditional chromate treatments without containing harmful hexavalent chromium. Additionally, it can control the decrease in corrosion resistance that occurs during heating, which is a drawback of chromate treatment. In recent years, there has been a growing global awareness of environmental measures, leading many industries, including automotive and semiconductors, to consider alternatives to hexavalent chromium. Among these, trivalent chromate is being used as a substitute for chromate plating. On the other hand, compared to chromate treatment, managing the process parameters such as the stirring state of the plating material, immersion time, temperature, and pH can be challenging, which may result in uneven appearance and color finish. Furthermore, in general chromate treatments, the color may change as corrosion begins.
Company information
Wilco sells various fastening components, including screws, as well as professional tools. Please feel free to contact us regarding custom products, custom processing, and the issuance of various certificates and documents related to other products.
