[First Industrial Co., Ltd.] is currently publishing "Useful Information about Screws" on its website. A leading fastener manufacturer explains the basics of screws and more.

[Attention Engineers] The Basics of Screw Manufacturing Technology: "Forging Process." We are currently offering free technical materials on "Basic Knowledge of Forging Process," which explains the differences in the manufacturing of bolts and nuts.

Many "screw products" such as bolts and nuts are manufactured using "forging." "Forging" is a processing method that uses molds to shape metal materials by compressing them. It has many advantages, such as good yield, suitability for mass production, and increased strength due to work hardening. Although both are "screw products," bolts and nuts differ in materials, manufacturing processes, and manufacturing equipment. At Daiichi Kogyo, as a specialized group that manufactures both bolts and nuts, we have accumulated production and manufacturing technologies that correspond to each of these differences. We also utilize FEM analysis to conduct forging simulations, which are applied in process design and mold design. The reason we can manufacture both bolts and nuts can be found in the link below: "Production and Manufacturing Technology of the Specialized Group." A specialized group that manufactures both bolts and nuts has compiled "Basic Knowledge of Forging." We provide a clear explanation of the actual processing steps with accompanying photographs. Improvement examples utilizing FEM analysis are also included. Please download and take a look.

• others

[Attention Engineers] Screw manufacturing is not just about forging. There is also cutting and welding. We offer a free [technical document] that provides fundamental knowledge of each technique!

Daiichi Kogyo is a specialized group that develops and manufactures fastening components, including bolts and nuts. 【What a specialized group can do】 While "forging" is the common method for screw manufacturing, "cutting" is also an important processing technique for screw production when complex shapes or additional processes like drilling are required. Daiichi Kogyo possesses the manufacturing know-how necessary for "forging," "cutting," and "welding" in screw production. We can perform "composite processing" that combines these techniques. Forging + Cutting + Welding ⇒ Composite products With the accumulation of each processing technique, we can set up processes that leverage the characteristics of each method. 【Manufacturing Example】Production of parts with strict precision requirements. ● When manufactured using only "forging," the load on the mold increases, raising concerns about mold lifespan and quality deterioration. ↓ ● By switching from "forging" to "cutting" for manufacturing, we can reduce the load on the mold and lower forging costs, achieving quality improvement as well. For more details, please visit the following 【Daiichi Kogyo Co., Ltd. Fastener Division Fastening Components Site】. We are currently offering free technical materials that provide basic knowledge of screw manufacturing techniques, including "cutting and welding." Please download and take a look.

• others

What is delayed fracture? Why does hydrogen embrittlement occur? What are the prevention measures? I will explain the basics of delayed fracture and hydrogen embrittlement in an easy-to-understand manner.

Are you familiar with "delayed fracture of screws"? "Delayed fracture" refers to the phenomenon where a static stress (tensile or bending load) is applied at room temperature for a certain period of time, and then it suddenly fractures without any apparent plastic deformation. Despite the absence of large or repeated loads, the bolt suddenly fails... It might be due to delayed fracture. In fact, the mechanism behind "delayed fracture" has not been fully elucidated. The phenomenon of hydrogen embrittlement is considered to be an important factor. - What is delayed fracture? What are its testing methods? - What is hydrogen embrittlement? What are the countermeasures? This is a technical document that provides a basic understanding of these topics. Please refer to the PDF for more details. As a specialist in manufacturing both bolts and nuts, our company conducts performance testing and evaluation from the development stage at our R&D center to ensure that we meet our customers' performance requirements. We are also available for technical consultations. Please feel free to reach out to us.

• others

The trend towards lightweight materials is leading to the use of resins. We will clearly explain the basics of "insert nuts" needed for fastening resins, accompanied by illustrations!

An insert nut is a "fastening component" that is embedded in soft materials such as resin (plastic) to enhance the fastening strength of joints. With the aim of reducing weight, the use of resin is increasing. Insert nuts are used for fastening resin parts in various devices such as mobile phones, automobiles, and airplanes. This document provides a clear explanation of the "basic knowledge of insert nuts," including their features, types, usage, and materials, accompanied by illustrations. It also includes information on the types and characteristics of resins used with insert nuts. *For more details, please download the document or contact us directly.*

• others

You will understand the basics of "surface treatment" that improves the corrosion resistance and appearance of screws. This will explain the characteristics of representative surface treatments.

Metal screws, such as those made of iron, will corrode and rust due to electrochemical reactions after being molded for a while. Corrosion and rust can lead to poor appearance and reduced strength of the screws. To prevent such issues, surface treatment is applied to improve the rust and corrosion resistance of the screws. There are many types of surface treatment methods, each differing in functions such as corrosion resistance and appearance (color). It is necessary to choose the optimal surface treatment according to the purpose and usage environment. This document clearly explains the characteristics of commonly used surface treatments for screws: "Electrogalvanizing," "High Nickel Type - Zinc-Nickel Alloy Plating," and "GeometⓇ Treatment." It is a compact version that can be easily viewed. [Contents] ● Main types and overviews of surface treatments ● Surface treatments commonly used for screws For those who want to know more about surface treatments for resin fastening components, you can view more details here. [Technical Document] Understanding the Differences in Treatment Methods: 'Surface Treatment of Resin Fastening Screws' https://screw.daiichikogyo.co.jp/product/surface_treatment Please take a look.

• others

In preparation for this summer's extreme heat, we have completed a "Heatwave Countermeasure Catalog" that will help improve the working environment in the manufacturing and logistics industries. The catalog includes a wide range of products for facility improvements, such as fireproof certified heat-shielding sheets that cut radiant heat by 97%, heat-shielding curtains, roof and window countermeasure products, and fans suitable for large spaces, as well as black globe thermometers that can measure WBGT, wearable alert bands, mobile cooling shelters, and fan-equipped work clothing. We have consolidated measures for "building countermeasures," "work space countermeasures," and "personal countermeasures" into one volume. It can also be used as reference material for discussions in safety and health committees. Please take a look at the specific measures that simultaneously achieve heat countermeasures and energy conservation/CO₂ reduction.

We are pleased to announce the establishment of the "Kyushu Sales Office" aimed at strengthening our business foundation in the Kyushu area. With the opening of the new sales office, we will be able to respond more quickly and flexibly to our customers in the Kyushu region, while enhancing our support system closely tied to the local community. We will also deepen our collaboration with local partner companies, aiming for further growth of our business while strengthening our trust with the community. We kindly ask for your continued support for the Kyushu Sales Office and our company. Thank you very much. 【Overview of Kyushu Sales Office】 Establishment Date: January 1, 2026 Company Name: BM Nagano Co., Ltd. Kyushu Sales Office Location: 1-15-20 Hakataekimae, Hakata Ward, Fukuoka City, Fukuoka Prefecture, 812-0011, NMF Hakataekimae Building 2nd Floor

We have recently started a demonstration experiment aimed at addressing antibiotic-resistant bacteria in dairy farming. Utilizing compost environments, we will examine the impact of using our technology-based aqueous solutions on microbial dynamics. This experiment is being conducted with field cooperation, aiming to establish a new approach that contributes to the realization of a sustainable livestock environment and the reduction of antibiotic usage. In this trial, we will set up a spray group (Group H) and a non-spray group (Group C), and will conduct a time-series comparison before spraying, immediately after spraying, and at 1, 3, 7, 14, 28, and 42 days, as well as at the maturation stage. We will perform sampling from the upper, middle, and lower layers of the compost at a depth of 10 cm, while simultaneously collecting temperature logs (external temperature and two internal compost temperatures) to analyze microbial changes and fermentation status from multiple angles. Based on scientific data, we will pursue a balance between safety and effectiveness, and work towards contributing to the livestock industry.

[SCM Brochure Update] We have updated the brochure for the remote-controlled unmanned excavation method, Safety Climber Method, which is promoted by K-F as a supporting member. The name of the latest brochure is: scm_panf_260219.pdf We hope you find it useful. *For technical questions regarding the Safety Climber Method or inquiries about pricing, please contact the Safety Climber Association Secretariat.

Kort Valuta Inc. (Head Office: Shibuya, Tokyo; CEO: Hideki Shibata; hereinafter “the Company”) announces that Yashima Taxi Co., Ltd. (Head Office: Koto-ku, Tokyo; CEO: Toyoko Nagamine; hereinafter “Yashima Taxi”) has reported positive results— including improvements in hiring, retention, and revenue—one year after implementing the employee benefit service utilizing the “Custom Point Allocation” feature of the TwooCa app, which incorporates a digital employee ID provided by the Company. Press Release: https://prtimes.jp/main/html/rd/p/000000061.000076589.html (*1) Applicable only to benefits that do not fall under “wages” as defined by the Labor Standards Act. (*2) Based on results reported by Yashima Taxi.