第一工業 Company Profile

Screws may be small and inconspicuous, but they are commonly used in products close to us. They are important components that play a role in various fields, including automobiles, buildings, computers, robots, as well as in asteroid exploration and medical applications. Due to the wide variety of shapes and materials of screws depending on the components they fasten and their intended use, it can be confusing when it comes time to choose. On our company's website, in the "Useful Information about Screws" section, we explain the characteristics, types, and surface treatments of screws, providing foundational knowledge. We offer detailed information for field workers, designers, developers, and anyone interested in screws. For more details, please click the related link to visit our company's website.

Do you know about the performance evaluation of screws? Screws are often perceived as standard products, but many of the precision screws we handle are developed through various performance evaluations based on customer requirements. Screws are fastening components that significantly impact the strength of mechanical structures. Loosening or breaking of screws can lead to major accidents. The performance evaluation of screws includes many items, such as the unique "axial force," "loosening," and "tensile strength," as well as the screw's own "durability," "mechanical strength," and "fatigue strength." Our company is equipped with testing facilities to conduct evaluations for each of these performance aspects. We have summarized the types of equipment we use for performance evaluation. Each test is explained with photos, detailing the overview of the testing machines, as well as the purpose and content of the tests. Some of the testing machines have been developed in collaboration with academic institutions. *Specific examples of tightening tests and delayed fracture tests have been added. Please take a look at the performance evaluations accumulated by Daiichi Kogyo Co., Ltd. as a total fastener manufacturer. Feel free to contact us with any inquiries.

We have compiled a booklet highlighting the appeal of the "SSOO Nut (Heat-Press Insert Nut)" developed by Daiichi Kogyo Co., Ltd., a screw manufacturer. The "SSOO Nut" features fine surface irregularities on the shaft portion to enhance torque resistance. It is a heat-press insert nut that achieves "difficulty in turning" and "high pull-out strength." Even when tightened with high torque, it does not slip, preventing damage to resin products. Additionally, its excellent pull-out strength contributes to weight reduction by reducing the number of components. The booklet explains the characteristics of the SSOO Nut, such as its "difficulty in turning" and "high pull-out strength," and introduces examples of weight reduction achieved through actual use. *For more details, please refer to the related catalog.