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Stainless steel (SUS) also has magnetic properties. When making SUS products after producing iron products, the magnetism may transfer. Since the magnetic properties can vary by lot, it is difficult to arrange for a "lot that preferably does not stick to magnets." For some products, it may be possible to procure SUS316 or SUS316L, which have lower magnetism, so please consult with us. *For more details, you can view them through the related links. For more information, please download the PDF or feel free to contact us.

There are. Depending on the presence of iron and the usage environment, it may rust. There are also stainless steels that are resistant to rust, so please feel free to contact us. Additionally, we have posted other frequently asked questions at the link below, so please take a look. *For detailed information, you can view it through the related links. For more details, please download the PDF or feel free to contact us.

Semus screws (integrated screws) are products that incorporate flat washers or spring washers into the screw. There are different types of Semus, and the naming and notation change depending on what is integrated. When requesting Semus, you will need to choose the type of head you prefer. *For more details, you can view the related links. For further information, please download the PDF or feel free to contact us.*

Originally, flat washers were created based on the international standard ISO 7089 to establish JIS B 1256. Although it remains JIS B 1256, the dimensions have gradually changed over the years, leading to the distinction between old and new versions. 【JIS B 1256: 1963】The so-called old JIS. If it is marked as "P=〇" in the SEMS, this refers to the dimensions of this flat washer. 【JIS B 1256: 1978】The so-called new JIS. Generally, it is often referred to as "ISO." In SEMS, it is marked as "I=〇." 【Old JIS B 1256: 1998, JIS B 1256: 2008】These versions are currently not circulating in the market. *For more details, please refer to the related links. For further information, feel free to download the PDF or contact us.

A half-thread refers to a product where the entire threaded section below the head is not threaded, and it does not mean "half is threaded." The length of the threaded section varies depending on the product and size. There is a calculation method used when you want to know the length of the threaded section. 【For hex bolts】 M(thread designation)x2+6 / For lengths of 130 or more: Mx2+12 / For lengths of 220 or more: Mx2+25 【For hex socket bolts (caps)】 Mx2+12 (caps are not related to length) (Example) For a half-thread hex bolt M10x60: 10x2+6=26, so the threaded section is approximately 26. *For more details, you can view the related links. For more information, please download the PDF or feel free to contact us.