Iron Type 2 Grooved + Pan Tapping Screw Trivalent Chromate Black
This is a screw that can be directly tightened into a pilot hole that has not been processed with internal threads by plastically forming internal threads in the counterpart material itself. The screw pitch is finer than that of type 1 tapping screws, with the tip of the screw cut by 1/4, and the cut part acts as a blade to shave the counterpart material, forming the internal threads. Usable counterpart materials include thin and thick plates (0.4 to 5 mm or less), non-metals, thermosetting resins, etc. It is compliant with EU-RoHS standards.
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basic information
Size range: M2-M4
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
Iron (steel) is widely used as a steel 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 are used that have undergone heat treatment or have additives such as chromium and molybdenum, depending on the application for 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 treatment without containing harmful hexavalent chromium. Additionally, it can control the decrease in corrosion resistance during heating, which is a drawback of chromate treatment. In recent years, there has been a growing awareness of environmental measures worldwide, and many industries, including automotive and semiconductors, are considering 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 conditions such as the stirring state of the plating material, immersion time, temperature, and pH can be challenging, which may lead to inconsistencies in appearance and color finish. Furthermore, in general chromate treatment, 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.
![[Technical Column] Three Elements to Avoid Failure with Tapping Screws](https://image.mono.ipros.com/public/product/image/f1b/2001076434/IPROS33652398586329210259.png?w=280&h=280)
