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  3. 第一工業 鋲螺事業部(ネジ・ボルト・ナット等締結部品 製造販売. 静岡県浜松市)
  4. "Learn about 'looseness' in screws" - We are offering a free copy of "Screw Textbook Vol. 3 [Looseness and Countermeasures]." Brought to you by Daiichi Kogyo Co., Ltd., a total fastener manufacturer.
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  • Jan 18, 2021
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Jan 18, 2021

"Learn about 'looseness' in screws" - We are offering a free copy of "Screw Textbook Vol. 3 [Looseness and Countermeasures]." Brought to you by Daiichi Kogyo Co., Ltd., a total fastener manufacturer.

第一工業 第一工業 鋲螺事業部(ネジ・ボルト・ナット等締結部品 製造販売. 静岡県浜松市)
We are currently offering a free copy of "Textbook on Screws Vol. 3 [Loosening and Countermeasures]," which summarizes the basic knowledge of screws (looseness of screws) in an easy-to-understand manner. Do you know about the "loosening" of screws? Screws are used in various machines and architectural structures, but they can unexpectedly loosen due to external forces or vibrations. When screws loosen, it can lead to serious accidents, such as malfunctioning, disassembly, or destruction of mechanical structures. Therefore, preventing loosening is an important issue for ensuring the reliability of the strength and performance of screw joints. This document explains the basics of screw "loosening," including the types of loosening, prevention measures, and testing methods for loosening resistance, using diagrams for clarity. Please take a look. [Contents] ◆ Mechanism of loosening ◆ Types of loosening (rotational loosening and non-rotational loosening) ◆ Prevention measures for loosening ◆ Measurement methods for loosening resistance
Screw Textbook Vol. 3
Screw Textbook Vol. 3
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基礎から学ぶねじの教科書Vol.3ver1.0.pdf[1700542]

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<Textbook of Screws Vol.3: [Loosening and Countermeasures] [A Must-See for Those Who Want to Understand Screws from the Basics!]>
This explains the basics of "loosening" of screws.
Textbook of Screws Vol.1: [Basic Terms and Types] [A Must-See for Those Who Want to Understand Screws from the Basics!]
This explains the basic terms and types of screws.
Textbook of Screws Vol.2: [How Screws Tighten] [A Must-See for Those Who Want to Understand Screws from the Basics!]
This explains the mechanism of "fastening" screws.
All About Screws Made Easy! (Complete Edition) Textbook of Surrounding Technologies of Screws: Everything About Screw Manufacturing
This explains the materials, processing methods, and inspection/evaluation of screws with illustrations.
All About Screw Materials Made Easy: Textbook of Surrounding Technologies of Screws Vol.1: How to Choose Screw Materials
This explains the "materials" used for screws.
All About Screw Manufacturing Made Easy: Textbook of Surrounding Technologies of Screws Vol.2: How to Make Screws: Molding - Heat Treatment - Surface Treatment
This provides a detailed explanation of the "manufacturing processes" of screws, including molding, heat treatment, and surface treatment.
All About Screw Inspection and Evaluation Made Easy: Textbook of Surrounding Technologies of Screws Vol.3: Inspection and Evaluation of Screws
This provides a detailed explanation of "inspection and evaluation" to ensure the "performance" and "quality" of screws.

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基礎から学ぶねじの教科書Vol.1.jpg

Understanding the Basics of Screws: A Textbook on Screws Learned from the Ground Up

We are offering the textbook "Learning the Basics of Screws" for free, which helps you understand the fundamentals of screws. It includes topics such as "How Tightening Works" and "Loosening and Countermeasures," and is available as part of a series.

Screws are the fundamental mechanical elements that "connect things." They are utilized in various fields, including automobiles, buildings, computers, robots, as well as in asteroid exploration and medical applications. It is said that screws are so common that they can be found "within a radius of 1 meter." Do you know what types of screws exist? You can easily find out by looking at Screw Textbook Vol. 1 [Basic Terms and Types]. Do you know why screws tighten? Screw Textbook Vol. 2 [The Mechanism of Screw Tightening] explains it clearly with illustrations. Do you know why screws loosen? Screw Textbook Vol. 3 [Loosening and Countermeasures] provides a detailed explanation of the mechanisms behind screw loosening and preventive measures. Are you familiar with screw fastening design? Screw Textbook Vol. 4 [Screw Design Part 1] offers an easy-to-understand explanation of the fundamental knowledge necessary for screw fastening design. If you want to learn about screws from the basics, please refer to the PDF materials. Feel free to contact us with any inquiries.

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Understanding Everything About Screws (Complete Edition) - A Textbook on Surrounding Technologies of Screws

I will teach you how to make screws. We will provide free technical materials that cover everything about screw making, including materials, processing methods, inspection, and evaluation tests.

Screws are used in various machines such as transportation equipment and structures, but do you know how screws are made? Even seemingly simple screw components have various characteristics depending on their applications and purposes, including materials, processing methods, and inspection methods. To choose the right screw for a specific use, it is important to understand the characteristics of each manufacturing process, as well as inspection and evaluation tests. The textbook series on screw-related technologies explains the techniques involved in screw manufacturing in an easy-to-understand manner. If you are struggling with screw selection or want to learn about the technologies related to screw manufacturing, please refer to the PDF materials. Feel free to contact us with any inquiries.

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Insert bolt that can be tightened without breaking the resin of "SSOO Bolt".

A high-torque compatible embedded bolt for resin that is strong against rotation and withdrawal, and does not damage the resin. It allows for nut tightening when embedded in resin parts.

The "SSOO Bolt" is a resin embedded bolt (insert bolt) with a special octagonal head shape, offering excellent torque resistance and pull-out strength. An insert bolt is a bolt that is embedded in resin and fastened with a nut. By tightening with a nut, it allows for the fastening of resin parts to each other or resin parts to metal. It minimizes deformation and cam-out of the resin when fastened with high torque, enabling nut tightening at high torque levels. It can also be used for back embedding (thermal press fitting), making it suitable for shapes that cannot be integrally molded. Since the bolt can be used in an upright position within the resin, it improves the assembly of parts. The product design has been completely revamped, and sizes from M4 to M8 are now available. 【Features】 ● Special shape that minimizes cam-out and slip even when tightened with high torque ● Strong against pull-out, preventing deformation of resin parts ● Usable for both insert (simultaneous molding) and outsert (thermal press fitting) ● Mass production possible due to unique manufacturing methods ● Trusted Octa Lobular series *For more details, please refer to the materials. Feel free to contact us with any inquiries.

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High torque compatible cap insert nut "SSOO Nut PLUS"

<New Product> Adding more peace of mind! A new insert nut that advances weight reduction. "Doesn't rotate" + "Doesn't loosen" = Protects resin products.

The "SSOO Nut PLUS" adds a cap to the reliable outsert nut, the SSOO Nut! It is a new insert nut from the Octa Lobular(R) series. <Are you having trouble fastening resin parts?> With the SSOO Nut PLUS, you can ensure the high torque resistance and pull-out strength of the "non-rotating" SSOO Nut. It solves the fastening issues of resin parts! 【Features】 ■ High torque resistance performance 1.8 times that of knurled products, preventing slipping and co-rotation even when tightened with high torque. ■ High pull-out strength 1.2 times that of knurled products, also excellent in vibration resistance. ■ Adds a horizontal cap to the SSOO Nut! - Can be used with simultaneous molding, making it suitable for thermosetting resins. - The cap prevents resin from wrapping around, ensuring secure fastening. - The horizontal cap can be used in space-constrained battery parts and resin components. - Prevents loosening by ensuring metal contact. It can be used as either an insert or an outsert, allowing you to choose specifications according to your application. *For more details, please refer to the materials available for download in PDF format or feel free to contact us.

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We can assist you in a wide range from automobiles to buildings! [Featured Nuts with Proven Results]

We have a proven track record. Nuts that run around the world. Insert nuts that help reduce costs and weight. Non-loosening three-blade nuts that can be used for disaster prevention supplies.

We are widely contributing from automobiles to buildings! [Featured High-Performance Nuts with Proven Results] ■ Bag Nuts (Cap Nuts): Running all over the world! - A wide range of sizes from automobiles to buildings (M3~M36). - The cap at the tip ensures safety and enhances appearance. - The first JIS 3 type cap nut manufactured and sold in Japan. Available in cutting-edge titanium material. ■ High Torque Compatible Insert Nuts (Outsert Nuts): Achieved cost reduction and weight reduction! - Adopted for resin parts in next-generation vehicles (electric vehicles and hydrogen vehicles). - High torque resistance allows for a reduction in the number of fasteners, achieving cost savings. - Contributes to the lightweight of components. ■ Lock Nuts (3-Blade Type): Used for disaster prevention supplies because they do not loosen! - Meets safety requirements for vibration dampers and highway sound barriers. - Protects people with nursing beds. - Widely applicable to transportation equipment such as automobiles and motorcycles, as well as buildings. Technical documents and detailed information for each nut can be viewed from downloads. Please feel free to contact us for case studies and proven results.

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High performance but can be used for cost reduction. Case studies available! [High Performance Bolt Feature]

Cost reduction through aluminum separation. Stainless steel for a higher level of strength. High-torque compatible resin bolts that can be embedded for use.

【High-Performance Bolt Feature】High-performance bolts can also be used for cost reduction! Case studies available. ■High-Strength Aluminum Bolts - Lightweight and strong. Contributes to weight reduction and improves fuel efficiency. - Can be used in aluminum products without the need for recycling separation. Reduces recycling costs. - Used in aluminum frames of the same material, achieving labor reduction and realizing cost reduction. ■High-Strength Stainless Steel Bolts - Despite being made of SUS304 material, ensures a higher strength (A2-90) through a special manufacturing process. - Achieved cost reduction by replacing with SUS304CUN material bolts. ■High Torque Compatible Insert Bolts (Outsert Bolts) - Bolts for resin that are embedded in resin parts. With high torque resistance, they do not rotate and protect the resin from damage. - With torque resistance and pull-out strength, it is possible to reduce the number of fasteners. Contributes to weight reduction and cost reduction. - Since back-filling (outsert) is also possible, it enables labor reduction and cost reduction. Detailed materials such as technical documents for each bolt can be viewed from the download section. Please feel free to contact us for case studies on cost reduction.

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Related catalog(9)

Textbook of Screws Learning from the Basics Vol. 3 [Screw Loosening and Countermeasures] [A must-see for those who want to understand screws from the basics!]

Textbook of Screws Learning from the Basics Vol. 3 [Screw Loosening and Countermeasures] [A must-see for those who want to understand screws from the basics!]

TECHNICAL
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Screw Textbook Vol. 1: [Basic Terms and Types] [A must-see for those who want to understand screws from the basics!]

Screw Textbook Vol. 1: [Basic Terms and Types] [A must-see for those who want to understand screws from the basics!]

TECHNICAL
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Contact this catalog

Textbook on Screws Vol. 2: [The Mechanism of Screw Tightening] [A must-read for those who want to understand screws from the basics!]

Textbook on Screws Vol. 2: [The Mechanism of Screw Tightening] [A must-read for those who want to understand screws from the basics!]

TECHNICAL
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All About Screws (Complete Edition) - A Textbook on Screw Peripheral Technologies - Everything About Screw Making

All About Screws (Complete Edition) - A Textbook on Screw Peripheral Technologies - Everything About Screw Making

TECHNICAL
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Understanding Well! Screw Materials: Textbook of Screw Peripheral Technologies Vol. 1 - How to Choose Screw Materials

Understanding Well! Screw Materials: Textbook of Screw Peripheral Technologies Vol. 1 - How to Choose Screw Materials

TECHNICAL
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Understanding Screws! Textbook on Screw Manufacturing and Related Technologies Vol. 2: How to Make Screws - Molding, Heat Treatment, Surface Treatment

Understanding Screws! Textbook on Screw Manufacturing and Related Technologies Vol. 2: How to Make Screws - Molding, Heat Treatment, Surface Treatment

TECHNICAL
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Understanding Well! Screw Inspection and Evaluation: Textbook of Screw Peripheral Technologies Vol. 3 - Screw Inspection and Evaluation

Understanding Well! Screw Inspection and Evaluation: Textbook of Screw Peripheral Technologies Vol. 3 - Screw Inspection and Evaluation

TECHNICAL
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Product Information: "High Torque Compatible Resin Embedded Bolt SSOO Bolt"

Product Information: "High Torque Compatible Resin Embedded Bolt SSOO Bolt"

PRODUCT
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Product Information: "High Torque Compatible Cap Insert Nut SSOO Nut PLUS"

Product Information: "High Torque Compatible Cap Insert Nut SSOO Nut PLUS"

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第一工業 鋲螺事業部(ネジ・ボルト・ナット等締結部品 製造販売. 静岡県浜松市)
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We have released the document 'Half a year of slacking vs. full operation in 3 months - Conditions for companies that should use initial setup support!'

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We have published a white paper titled "Half a Year of Procrastination vs. Full Operation in 3 Months - Conditions for Companies That Should Use Initial Setup Support," aimed at companies considering the introduction and operation of attendance management systems. This document clearly explains the key points of initial setup that are prone to difficulties during implementation, as well as the differences between handling it in-house and utilizing specialized support. If you want to smoothly launch an attendance management system, please take a look.

Jul 01, 2026

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Summer Grand Thanksgiving Festival 2026

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From July 2026 until the end of September, we will hold a Summer Grand Appreciation Festival! High-pressure washers at great prices! Plan 1: A special set of SP60L/60new/60DX/60GE comes with a free Z swivel joint set! Plan 2: Customers who purchase a compressor will receive a new red hose (30m) for free! Plan 3: Washing hose [6M] available at a special price! A wide range of popular high-pressure washer series, cleaning accessories, painting machines, compressors, and other products are also available! Items listed can be purchased at great deals! Don't miss this opportunity!

Jul 01, 2026

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Notice of Envu Ant Bait Certification Renewal

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(Japan) Termite Control Association Hachikusan FL No. 3359 (Japan) Termite Control Association Hachikusan MC No. 3511 The update from July 1, 2026, is now available.

Jul 01, 2026

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[Please be sure to introduce this to the management and general affairs department] Update on the introduction case of the attendance management system! With the thorough support of our sales representatives, you can rest assured about the configuration changes tailored to your regulations.

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An article has been published regarding the case of introducing the attendance management system "KING OF TIME" to G.C. Planning Co., Ltd. ~ In the case of G.C. Planning ~ The previous attendance management system had the challenge of making it difficult to check attendance in compliance with laws and regulations. The decision to implement was based on top-class implementation achievements and the unique support system of the agency, i Business Partners. Although there were moments that felt challenging during the implementation and operation, we resolved each issue by consulting with the sales representatives of iBP. [Case Overview] ■ Challenges before implementation - The previous attendance management system made it difficult to check attendance in compliance with laws and regulations. ■ Key points of implementation - Top-class implementation achievements and the unique support system of the agency, i Business Partners. *For more details, please refer to the related links or feel free to contact us.

Jun 30, 2026

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Chic Holdings Showcases Internal Communication Initiatives with TwooCa

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70% Adoption Achieved — Fostering Natural Workplace Connections in a Hybrid Work Environment* We have published a new customer success story featuring Chic Holdings Co., Ltd., showcasing how TwooCa is helping strengthen internal communication in the era of hybrid work. As hybrid work becomes the norm, many organizations are facing a common challenge: maintaining meaningful connections and spontaneous communication among employees. At Chic Holdings, TwooCa is being used to support initiatives such as company lunch gatherings and peer appreciation messages, creating more opportunities for employees to connect naturally across departments. Read the full customer story: https://prtimes.jp/main/html/rd/p/000000125.000076589.html Approximately 70% of the company's 49 employees actively use TwooCa (*According to Chic Holdings). The interview explores: The background behind the initiative How TwooCa has been integrated into employee engagement programs The positive impact on workplace communication and cross-department collaboration If you're exploring new approaches to employee engagement, workplace culture, or corporate wellbeing, we hope you'll find this case study valuable. #TwooCa #EmployeeEngagement #HybridWork #CorporateWellbeing #HRTech #WorkplaceCulture #DigitalTransformation #PeopleStrategy

Jun 30, 2026

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