Upset small screw (hexagonal head)
We offer screw sizes from M3 to M12! The materials used are iron, brass, and stainless steel.
We would like to introduce our "Upset Screws (Hex Head)" that we handle. The materials are iron, brass, and stainless steel. The screw sizes available are M3, M3.5, M4, M5, M6, M8, M10, and others. Please feel free to contact us if you have any requests. 【Product Lineup (Partial)】 ■M3 ■M3.5 ■M4 ■M5 ■M6 *For more details, please feel free to contact us.
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【Other Lineup】 ■M8 ■M10 ■M12 *For more details, please feel free to contact us.
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For more details, please feel free to contact us.
Company information
Our company is a specialized trading firm that handles a wide range of products related to manufacturing, centered around "screws." We offer not only tools, carts, and standard screw products but also processed and drawing items made of metals, plastics, and harnesses. Additionally, we handle various types of transport robots such as AGVs and AMRs. Since our establishment in 1957, we have been engaged in transactions with many suppliers both domestically and internationally. Our strengths lie in our reliable quality, competitive pricing, and speedy responsiveness. In addition to our headquarters in Tokyo, we have branches in Kawasaki, Tochigi, Shizuoka, Osaka, the Philippines, Vietnam, Shanghai, and Hong Kong, where our sales representatives provide consistent support from quotations to after-sales follow-up. We also have a subsidiary, Tokai Lock Co., Ltd., which specializes in anti-loosening processing for screws. We will provide optimal proposals tailored to your needs, so if you have any issues related to manufacturing, please feel free to contact Koyama Co., Ltd.



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