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更新日： 集計期間:Oct 15, 2025～Nov 11, 2025
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更新日： 集計期間:Oct 15, 2025～Nov 11, 2025
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Leave it to us for long screws (cut bolts)!
□■Long Screws (Cut Thread) Bolts Stock Range■□ 【Material】Iron (Raw, Chromate, Unichrome) S45C, Stainless Steel, Brass, Polycarbonate, Titanium, Lenny, etc... 【Size】M3 to M48 *Varies by material. 【Length】Up to 2,000mm *Varies by material. *Please feel free to inquire about other dimensions as well.
Products such as screws, nuts, and bolts processed with a trio coat. By coating the screw parts and seating surfaces, it ensures reliable loosening prevention and sealing effect!
Trio Coat does not use any solvents in its materials, considering the environment. It is a reusable eco-coating due to its refillable nature! Trio Coat demonstrates a reliable anti-loosening and sealing effect by coating nylon resin, which excels in elasticity, functional strength, and chemical resistance, on the threaded parts and seating surfaces! As the name suggests, Trio Coat is an original product that combines three concepts: resistance to loosening, sealing, and environmental durability, making it a product with ambitious features! We can apply Trio Coat processing to your desired material. We will provide a quote based on the material, size, and shape, so please consult us first through the inquiry form.
![[Company Profile Catalog] Tai Ei Co., Ltd.](https://image.www.ipros.com/public/product/image/46b/2000393989/IPROS48421567868310692601.jpeg?w=280&h=280)
High corrosion resistance and excellent high strength stainless steel material.
"Duplex stainless steel" is a type of stainless steel that consists of a microstructure of both austenite and ferrite by adding an appropriate amount of nickel (Ni) to high chromium (Cr), providing high strength and high corrosion resistance. It meets various needs from fasteners to sheet metal and welding processing. 【Features】 ■ High strength ■ High corrosion resistance *For more details, please download the PDF or feel free to contact us.
Years of accumulated know-how, experience, and networks! Custom-made solutions tailored to your needs.
Our company specializes in custom-made screws and bolts. We collaborate with over 300 partner companies that possess technologies such as "cutting processing, header & trimmer processing, bending & pressing, rolling processing, drilling processing, and surface treatment." Drawing on our years of accumulated know-how and experience, we propose plans that meet our customers' expectations in terms of cost, delivery time, and quality. Please feel free to contact us with your requests. 【Strengths】 ■ Collaboration with over 300 partner factories ■ From meetings to delivery ■ Proposal for lot production for repeat items ■ Material sales ■ VA proposals 【New Business】 ■ Sten Shell It features high durability, corrosion resistance, and electrical insulation due to a resin film containing SUS316 flakes. It is mainly used in salt damage environments, such as in cubicles, sluice gates, and bridges. ■ Alkaline Electrolyzed Water (OilWater) Alkaline electrolyzed water (Oilwater) is an industrial cutting fluid that does not require mineral oils or preservatives. By mixing in a special additive, it provides lubrication and cooling properties, achieving high cutting performance. *For more details, please refer to the PDF materials and feel free to contact us.
Exhibits excellent performance as a lightweight and sturdy mounting component.
**Features** - Excellent impact resistance: Polycarbonate screws and bolts have very high impact resistance. - Transparency and visual quality: They are highly transparent and have high light transmittance, resulting in products with high visual quality. - High temperature resistance: They maintain stability within a certain temperature range and are resistant to high temperatures. - Chemical stability: They maintain stability against many common chemicals and are resistant to chemicals. - Lightweight: They are lightweight yet strong, achieving both weight reduction of parts and durability. Polycarbonate screws and bolts cater to various applications requiring impact resistance, transparency, high temperature resistance, chemical stability, and lightweight properties, providing high-quality mounting solutions. (Variety of products, low cost, short delivery time! Fast delivery & small lot supply * Custom products can be made from 50 pieces!) Currently, we are offering a free set of 30 product samples with applications for our catalog booklet. Please contact us or apply through the "Catalog Request" on our website. *For more details, please contact us or download the catalog.
![[Technical Column] Do you know the difference between implant bolts and double-ended bolts?](https://image.www.ipros.com/public/product/image/4b8/2001076428/IPROS88895185154833002507.png?w=280&h=280)
Actually different! I summarized the specific differences between "insert bolts" and "double-threaded bolts."
Both the implant bolts and double-ended bolts have no heads and are products with threads cut on both ends, and they are sometimes thought to be the same product, but in fact, they are different. Recently, I received a consultation stating, "There was a loosening in the double-ended bolt that is securing the machine." It seems that the person was not aware that the effective diameter of the threaded part on the implant side of the implant bolt is slightly thicker, which was the cause of the loosening. If such issues are discovered after mass production, it can lead to serious problems. To prevent this, let's recognize the differences between "implant bolts" and "double-ended bolts." *For more details on the column, you can view it through the related links. For further inquiries, please feel free to contact us.*
From carefully selecting materials to manufacturing and processing, we respond with trusted technology!
We would like to introduce the "screws and bolts" handled by Tenku Industry Co., Ltd. We offer a variety of products, including "L-shaped anchor bolts," "left-hand screws for braces," "full screws," and "chemical full screws." Additionally, the products we handle range from small diameters of 5mm to large diameters of 160mm, and we can manufacture any size in millimeter increments within that range. We gather our meticulous technical expertise to meet our customers' requests. 【Features】 ■ Rapid production and supply of high-quality products at stable prices ■ Development of manufacturing that reliably responds to customer trust ■ Introduction of traceability for quality control, safety, and environmental purposes ■ Capable of manufacturing any size in millimeter increments *For more details, please refer to the PDF materials or feel free to contact us.
![[Product Catalog] Trapezoidal Screw Bolt for PC Sleepers](https://image.www.ipros.com/public/product/image/ccc/2000246951/IPROS4948437214390291289.jpg?w=280&h=280)
Excellent strength! Customizable screw bolts available.
The "PC sleeper trapezoidal screw bolt" is a bolt that fastens the rail to a sleeper embedded with a synthetic resin plug that serves as a female thread, using a spring. Our company manufactures the threaded part of the bolt using a hot-rolled rolling method. As a result, unlike cutting methods, the fiber structure of the steel material is maintained without being severed. It has been adopted in many newly constructed Shinkansen lines, including the Sanyo Shinkansen. 【Features of the Hot-Rolled Rolling Method】 - Superior strength due to the intact fiber structure - High precision with no eccentricity - Suitable for mass production - Custom products for various shapes and trapezoidal threads are available - Machining of special steel and stainless steel threads is also possible *For urgent or emergency inquiries, please contact us through our website for technical questions.
