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bolt Product List and Ranking from 274 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Dec 31, 2025～Jan 27, 2026
This ranking is based on the number of page views on our site.

bolt Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Dec 31, 2025～Jan 27, 2026
This ranking is based on the number of page views on our site.

  1. 由良産商株式会社　特販部　特販課 Osaka//Machine elements and parts
  2. 神鋼ボルト Chiba//Machine elements and parts
  3. 日之出水道機器 メカニカルスティッチ部 Fukuoka//Machine elements and parts
  4. 4 泰生工業 Aichi//Manufacturing and processing contract
  5. 5 帝国製鋲 Osaka//Ferrous/Non-ferrous metals
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bolt Product ranking

Last Updated： Aggregation Period:Dec 31, 2025～Jan 27, 2026
This ranking is based on the number of page views on our site.

  1. Basic Knowledge of Screws: About Screw Standards 由良産商株式会社　特販部　特販課
  2. High-strength bolt for pressure jointing "Naring Bolt" 神鋼ボルト
  3. World's only high-strength bolt for one-sided installation: Hack High Strength One-Side Bolt フルサト工業 建材開発部
  4. 4 High-strength bolts (Torsion type/Hexagonal/Fused zinc) タカシマ 締結部品・加工部品　ものづくり総合商社
  5. 5 Anchor bolt "Hijikata Bolt" that makes removal work hassle-free. 泰生工業

bolt Product List

526～540 item / All 1085 items

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[Technical Column] Causes of Failure in Large Diameter Bolts Over M30

[Technical Column] Causes of Failure in Large Diameter Bolts Over M30

Causes of thick diameter bolts breaking! Explanation of countermeasures using a product called Super Bolt.

I believe that large-diameter bolts are often used for securing components such as tie rods and cover bolts for pressure vessels. Have you ever experienced a large-diameter bolt breaking? When a bolt breaks, it requires a lot of effort to address the issue, and in some cases, it can halt the machinery, resulting in loss costs. In this column, we will explain the causes of large-diameter bolt breakage and the countermeasures using a product called Superbolt. *You can view the detailed content of the column through the related links. For more information, please feel free to contact us.*

  • bolt

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Provision of technical materials useful for the structure and selection of screws, as well as for component selection during product manufacturing.

Provision of technical materials useful for the structure and selection of screws, as well as for component selection during product manufacturing.

Packed with information on the basic structure of screws and helpful tips for product selection! Technical materials are available to assist with component selection during product manufacturing!

Understand in 3 minutes! Technical materials on screws are available for download! Please feel free to download and take a look. ■ Screw Encyclopedia We have compiled products that are relatively commonly used in the market. ■ Overview of Resins Used for Plastic Screws - Overview of resin materials - Characteristics of each type - Mechanical properties by type of resin - List of physical properties of resin materials - List of chemical resistance of resins ■ Differences Between Embedded Bolts and Double-Ended Bolts We have summarized the tolerances for "length" and "thread length," which are particularly prone to causing trouble when using embedded bolts and double-ended bolts, according to the standards for embedded bolts (JIS B 1173) and the tolerances for fastening components (JIS B 1021). - Comparison table of differences between embedded bolts and double-ended bolts - Standards for embedded bolts (JIS B 1173) - Tolerances for fastening components (JIS B 1021) - How much difference is there between JIS B 1173 and JIS B 1021? *For more details, please refer to the PDF materials or feel free to contact us.

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Construction-related products High-strength hex bolts

Construction-related products High-strength hex bolts

Construction-related products High-strength hex bolts

High-strength hex bolts (M12 to M30) are actively used in steel frame and bridge construction. 【Features】 - Coated with a surface treatment to prevent rust in highly corrosive environments such as coastal and offshore areas. - Made from special steel materials (developed by Sumitomo Metal Industries, Ltd.) such as low carbon manganese, chromium, and boron steel, ensuring stable mechanical properties of the products. - Utilizing advanced equipment for bolt forming (up to φ27mm), we conduct consistent production, ensuring stable quality. - Leveraging years of hot forging technology, we also manufacture high-strength hex bolts (M33 to M76). - We mass-produce products with stable quality through strict lot management based on JIS B1186. - We maintain a large inventory of standard products and respond quickly to orders. *For urgent or emergency inquiries, please contact us through our website for technical questions.

  • nut
  • bolt

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Stainless bolt

Stainless bolt

It is manufactured under strict quality control with extensive experience in all processes.

Stainless steel bolts are manufactured based on years of our accumulated technology and achievements. Additionally, there are processes such as hot forging, solution treatment, NC cutting, thread rolling, and surface treatment, all carried out under strict quality control and with extensive experience in each process. The range of rollable diameters is wide, from small to large, meeting all kinds of needs. *For urgent or emergency inquiries, please contact us through our website for technical questions.

  • nut

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Forging Technology Introduction DVD 【*Free Gift!】

Forging Technology Introduction DVD 【*Free Gift!】

Free DVD giveaway of "Forging Technology" from Teikoku Seiko, supporting social infrastructure!

Teikoku Seibou Co., Ltd. is a fastener manufacturer that has both hot and cold forging equipment, utilizing the characteristics of each to support many companies with standard bolts, as well as irregular bolts and special steel bolts, regardless of the lot size. Additionally, we are equipped with processing facilities that can consistently handle post-processing of bolts. We respond to various fastener needs. We are offering a DVD that introduces our forging technology for free. The DVD provides an overview of hot and cold forging techniques. *Companies wishing to receive the "DVD" should contact us and specify "DVD request" in their inquiry. *For urgent matters or technical questions, please contact us directly through our website.

  • fastener
  • nut

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Brochure "What is Forging Technology?" 【*Free Gift Available!】

Brochure "What is Forging Technology?" 【*Free Gift Available!】

Introducing the know-how of forged products essential for the development of infrastructure such as railways, civil engineering, shipbuilding, and construction! Get a free booklet now!

As a leading company in the rail fastening component manufacturing industry, we have been dedicated to the development of unique automation equipment and the improvement of technology, allowing us to produce better products at lower costs. We would like to introduce the forging technology of Teikoku Seibou. With our expertise in forging technology, we assist companies in various industries, including JR companies, municipal transportation bureaus, and private railways, in bringing their products to market. *For more details, please download the catalog. *For urgent matters or technical inquiries, please contact us directly through our website.

  • fastener
  • nut

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Railway-related products: Rail screws

Railway-related products: Rail screws

We offer screws with high precision and strong threaded parts using the hot rolling method!

At Teikoku Seibou, a leading company in rail fastening component manufacturing, we handle "rail screws." The intended uses are for fixing rails and fastening tie plates. To increase the pull-out resistance of the nails, we have cut threads. With the spread of synthetic sleepers, there are often cases where screws with thinner shaft diameters or smaller head diameters, as well as variations in shape depending on the usage location, are produced compared to conventional rail screws. Once we receive your drawings, we will start with mold design and proceed to manufacturing, so please feel free to consult us. 【Features】 ■ High precision and strong threaded parts due to hot rolling method ■ Thread cutting to increase the pull-out resistance of the nails ■ JIS mark certification product (JIS E1109) *For more details, please refer to the PDF materials or feel free to contact us.

  • others

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Railway-related products: fastening bolts and switch bolts.

Railway-related products: fastening bolts and switch bolts.

Numerous shock bolts and various shaped bolts related to signals and electricity.

The bolts for railway switches (points) are manufactured using a hot forging system. A variety of chock bolts and various shaped bolts related to signals and electrical components are produced using the hot forging system. We manufacture different types of screws, including metric screws and Whitworth screws (inch-based), according to customer requests. Based on our outstanding technical capabilities, we also produce a wide range of items. *For urgent or emergency cases, or for technical inquiries, please contact us directly through our website.

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Railway-related products: resin-coated bolts for electrical contact and anti-corrosion.

Railway-related products: resin-coated bolts for electrical contact and anti-corrosion.

Bolts treated with coatings such as nylon-based and epoxy-based.

Electrolytic corrosion is a phenomenon where metal rapidly dissolves due to the flow of electricity from natural phenomena on the surface of the metal. Iron structures are painted, and these paints contain a lot of zinc, which provides rust prevention effects. However, there are many areas of corrosion on bolts that have been hot-dip galvanized and are subjected to repeated wetting and drying, or are located in humid environments. To help address these issues, we also sell bolts that have been treated with coatings such as nylon-based and epoxy-based. *For urgent or emergency cases, or for technical inquiries, please contact us directly through our website.*

  • bolt

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Construction-related products high-strength hex bolts

Construction-related products high-strength hex bolts

High-strength hex bolts, which are active in steel frame and bridge construction, are also one of our main products.

High-strength hex bolts (M12 to M30), which are actively used in steel frame and bridge construction, are one of our main products. High-strength hex bolts play an important role as components for construction machinery, supporting the future of the construction industry. We use special steel materials for high-strength hex bolts, such as low-carbon manganese, chromium, and boron steel, ensuring stable mechanical properties of the products. Our consistent production process, utilizing advanced bolt forming equipment (for diameters of 27mm or less), guarantees stable quality. Leveraging years of experience in hot forging technology, we also manufacture large-diameter high-strength hex bolts (M33 to M76). We mass-produce products with stable quality through strict lot management based on JIS B1186. We maintain a rich inventory of standard products and respond quickly to orders. *For urgent or emergency inquiries, or technical questions, please contact us directly through our website.

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Construction-related products: stainless steel high-strength hex bolts

Construction-related products: stainless steel high-strength hex bolts

It has excellent design, corrosion resistance, and durability, and is widely used in various fields.

Stainless steel is excellent in design, corrosion resistance, and durability, and has been widely used in various fields for a long time. High-strength hex bolts used for stainless steel structural materials are regulated by JIS B1186 "Set of High-Strength Hex Bolts, Hex Nuts, and Flat Washers for Friction Joints." However, since the chemical composition and manufacturing methods of the material are not specified here, high-strength hex bolts made of stainless steel are manufactured based on the standards of the Stainless Steel Structural Engineering Association, SSBS301 "Set of High-Strength Hex Bolts, Hex Nuts, and Flat Washers for Structural Stainless Steel" (10T-SUS, 10-SUS, 35-SUS). *For urgent or emergency cases, or for technical inquiries, please contact us directly through our website.

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Construction-related products TM truss bolts (TM bolt)

Construction-related products TM truss bolts (TM bolt)

High quality, high strength, and corrosion-resistant treatment is available for bolts of various sizes.

TM truss bolts are used in the spherical joint sections of the TM spatial truss (by Taiyo Kogyo Co., Ltd.), which creates an ideal space without columns. TM bolts are made from chromium-molybdenum steel (SCM435) and nickel-chromium-molybdenum steel (SNCM439), heat-treated to achieve high strength using advanced heat treatment equipment. Additionally, they undergo special corrosion-resistant treatment to prevent delayed fracture. Teikoku Seibou Co., Ltd. can provide high-quality, high-strength, and corrosion-resistant treatment for bolts of various sizes (with a maximum neck length of 1,000 mm). *For urgent or emergency inquiries, or technical questions, please contact us directly through our website.

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Large machinery, civil engineering, and ship-related products hex bolts (4.6 to 12.9)

Large machinery, civil engineering, and ship-related products hex bolts (4.6 to 12.9)

We can manufacture bolts of all sizes according to user needs.

There are two types of hexagon head bolts based on the size of the width across the flats: 1. Standard hexagon bolts (regular hexagon bolts), and 2. Small hexagon bolts (hexagon bolts with a head width across the flats smaller than that of standard ones). The applicable strength grades are 4.6, 8.8, and 10.9. Teikoku Seiko Co., Ltd. can manufacture bolts of all sizes according to user needs. Additionally, since October 1993, Teikoku Seiko Co., Ltd. has been producing high-strength hexagon bolts with a diameter of 10.9 (JIS standard) using advanced heat treatment technology that leverages hot forging technology (with a maximum shank length of 1,000 mm possible). *For urgent or emergency inquiries, or for technical questions, please contact us directly through our website.

  • bolt

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Large machinery, civil engineering, and ship-related products - stainless steel bolts.

Large machinery, civil engineering, and ship-related products - stainless steel bolts.

It is manufactured under strict quality control with extensive experience in all processes.

The stainless steel bolts manufactured by Teikoku Seibou Co., Ltd. are produced based on years of accumulated technology and achievements. All products are made to order. The manufacturing process includes hot forging, solution treatment, NC cutting, thread rolling, and surface treatment, all carried out under strict quality control and with extensive experience in each process. The range of thread rolling is wide, accommodating small to large diameters, meeting all kinds of needs (with a maximum neck length of up to 1,000mm). *For urgent or emergency inquiries, or technical questions, please contact us directly through our website.

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Large machinery, civil engineering, and ship-related products; special items, irregular items, and wit screws.

Large machinery, civil engineering, and ship-related products; special items, irregular items, and wit screws.

With reliable technology and a trustworthy system, we have carefully worked on each and every one.

Teikoku Seibou Co., Ltd. has been dedicated to each and every task with reliable technology and a trustworthy system. Furthermore, in order to respond to the "next needs," we have established a system that leverages the characteristics of the hot and cold forging technologies we have cultivated up to today, enabling us to accommodate all types of orders. Whether it’s standard bolts or special shapes and irregular bolts, please feel free to reach out with any inquiries or requests for quotes, regardless of the quantity, including questions like "Can you make something like this?" or "Can it be produced more economically?" *For urgent or emergency matters, or technical inquiries, please contact us directly through our website.

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