ヤマシナ List of Products and Services

■EVO PT is a thread-forming screw for resin developed by the German company EJOT. The torque during screwing does not increase regardless of the length of the screw. This allows for stable fastening operations even when there are variations in driver torque or pilot hole depth. ■Additionally, by using the dedicated simulator EVO CALC, it is possible to examine the conditions for successful screwing that were previously considered through prototypes, without the need for prototyping, significantly reducing the costs, effort, and testing time required for adoption. ■Yamashina is entrusted with manufacturing and sales as the official licensee in Japan. ■Key points are explained in the video. For more details, please visit Yamashina's website. https://www.kk-yamashina.co.jp/product/evo-pt.html ■Yamashina has released a video on YouTube. https://www.youtube.com/watch?v=4SqQ1dCGvoM

• bolt

■Shinka is a tapping screw developed by Yamashina for thin plates. It can fasten thin steel plates of 0.3t or more without spinning, even without using a burring or nut. ■By eliminating burring and nuts, we can reduce processing costs, component costs, and waste disposal costs due to fastening failures caused by spinning. As a result, it is used by many customers, with an annual shipment record of over 100 million units to manufacturers of home appliances and industrial equipment. ■Recently, attention has also been drawn to the fastening speed. It has been found that the cycle time from gripping the screw to completing the tightening can be shortened by 30% compared to conventional screws for thin plates when using Shinka. ■By using Shinka, it is possible to reduce manufacturing costs associated with fastening by approximately 30%. ■We have uploaded a comparison video of the screwing time on YouTube. Please take a look from the link below. https://youtu.be/YupmIbisBp8 ■We also have videos on the Yamashina website. Below, other detailed information is also posted. https://www.kk-yamashina.co.jp/product/thinca.html

• bolt

■Excellent fastening performance The newly developed screw section provides high pull-out strength, high break torque, and high axial force. The tip is designed to enter the pilot hole straight, making it suitable for automation using robots. The counterbore can be shortened to about one-third of existing products, allowing for a reduction in boss depth. Due to low friction during screwing, it can be screwed in at high speeds, minimizing heat generation and preventing damage to the resin. It is also suitable for hard resins like GF-40 and has good reusability. ■EVO PT is a new technology developed by the German company EJOT. EJOT products have a proven track record as high-performance fasteners primarily for the automotive industry. ■Yamashina, as the official Japanese licensee of EJOT, designs, manufactures, and sells over 100 million EJOT products annually, supplying more than 60% to the automotive sector.

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• fastener

The EVO PT tapping screw for resin has a newly developed shape that suppresses the screwing torque. The screwing torque remains low and does not increase. This is due to its unique shape that reduces friction with the resin during screwing. This means that it minimizes friction heat, allowing for high-speed screwing without damaging the boss. It is the only tapping screw for resin that can be utilized to improve productivity and safety. EVO PT is a technology developed by the German company EJOT, and Yamashina manufactures and sells it as a licensed partner in Japan. ■ Please check the Yamashina website for more details. https://www.kk-yamashina.co.jp/product/evo-pt.html

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• simulator
• Stress Analysis

This is a simulator specifically for the EVO PT plastic thread-forming screw. It shortens the testing period by 40% (based on our example) to determine whether the tapping screws for resin will be effective in your current application. By consulting with us about the necessary conditions, we will provide the simulation results free of charge. (Some paid services are available.) Please also visit the Yamashina website. ■https://www.kk-yamashina.co.jp/product/evo-pt.html

• simulator
• Prototype Services
• bolt

■EVO PT is a thread-forming screw for resin developed by the German company EJOT. The torque during screwing does not increase regardless of the screw length. This allows for stable fastening operations even when there are variations in driver torque or pilot hole depth. ■Additionally, by using the dedicated simulator EVO CALC, it is possible to examine the conditions for successful screwing without the need for prototypes, significantly reducing the costs, effort, and testing time required for adoption. ■Yamashina is entrusted with manufacturing and sales as the official licensee in Japan. ■Key points are explained in a video. For more details, please visit Yamashina's website. https://www.kk-yamashina.co.jp/product/evo-pt.html ■Yamashina has released a video on YouTube. https://www.youtube.com/watch?v=4SqQ1dCGvoM

• bolt
• simulator

■ It is a high-strength aluminum screw with an extremely low risk of stress corrosion cracking. ■ We benchmarked aluminum bolts used in European automobiles and carefully selected the materials. ■ Adopted by a Japanese drone manufacturer. Its safety and reliability have been evaluated. ■ It offers many advantages such as weight reduction, electromagnetic wave countermeasures, and prevention of galvanic corrosion. * For data or material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt

"Strux" is a fastening stud that can be securely assembled to the counterpart material using its anti-rotation protrusions, retention grooves, and lower hole correction rings. This product allows for easy assembly with various metals and strength specifications compared to other studs, while achieving significantly higher reliability and productivity. It is a new type of stud that matches user needs. 【Features】 ■ High strength and reliability ■ High holding power and anti-rotation ■ Appearance ■ Design flexibility ■ Bonding with non-weldable materials *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• Screw

"ALtracs" is an optimal tapping screw made of lightweight alloy for areas where there is concern about a decrease in fastening force (axial force) due to vibrations or temperature changes. Regular tapping screws are subjected to carburizing hardening, which raises concerns about brittle fracture; however, this product undergoes quenching hardening, eliminating worries about brittle fracture. Additionally, the screw's cross-section is a new circular shape, maximizing the contact area between the screw threads and the mating material, allowing for stable fastening over the long term. 【Features】 ■ No concerns about brittle fracture due to quenching hardening ■ Enables long-term stable fastening *For data or material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• Screw

"USCA" is a tapping screw designed to meet the needs of fastening thin plates. It can securely fasten thin plates with a thickness of 0.35t to 0.8t using tapping screws, and even if there is some misalignment between the plates, it improves the effectiveness of pilot hole probing. Additionally, it can reduce the screwing torque, further increasing the current work speed. We can accommodate requests for head shapes, dimensions, and plating according to your application needs. Please feel free to contact us. 【Features】 ■ Lightweight and compact ■ Cost reduction across all areas ■ Ideal for integrating improved work efficiency *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• Screw

This catalog is the product catalog of Yamashina Co., Ltd., which mainly engages in the planning, manufacturing, and sales of metal products. It features high-quality screws, including the thin plate tapping screw "USCA," which excels in lightweight, compact design and meets a wide range of needs, as well as "ALtracs" and "DELTA PT." We offer a variety of metal screws, resin screws, and multifunctional components that solve issues such as loosening. [Contents] ■ Tapping screws for thin plates ■ Tapping screws for lightweight alloys ■ Tapping screws for thermoplastic resins ■ Rivet studs, etc. *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• Screw

"DELTA PT" is a tapping screw designed for resin, with a special shape for the screw threads and valleys to smooth the deformation flow of plastic. When screwing into plastic, the deformation of the female threads in the plastic is smooth, which reduces damage to the plastic during insertion and tightening. It is also resistant to vibrations and temperature changes, maintaining a secure fastening even after long-term use, allowing for weight reduction and miniaturization, as well as cost reduction and resource recycling. 【Features】 ■ Specially designed shape for screw threads and valleys ■ Reduces damage to plastic during insertion and tightening ■ Resistant to vibrations and temperature changes ■ Allows for weight reduction and miniaturization ■ Enables cost reduction and resource recycling *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• Screw

"Shinka" is a screw designed for thin steel plates with a thickness of 0.3mm, specifically for punch holes without burring, allowing for tapping fastening. It has a fastening strength that is approximately twice as high as conventional products when the female thread breaks and spins, enabling secure fastening of thin steel plates with strong force, and it is resistant to loosening, requiring about twice the torque of conventional products to loosen. By allowing tapping fastening of thin steel plates using punch holes, it not only reduces the need for nuts but also eliminates the burring process typically required for fastening, thereby reducing parts costs and processing expenses. 【Features】 ■ Securely fastens thin steel plates with strong force ■ Resistant to loosening ■ Fastening time is half that of conventional products ■ Reduces parts costs and processing expenses ■ Achieves cost reduction in material storage and management *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• Screw

Introducing Yamashina Co., Ltd.'s newly released tapping screw for thin plates, 'SPILEAD'. It features a three-start thread, but the height of the thread peaks is higher only for part of the screw, reducing the resistance during screwing. All three thread heights align directly below the head. This allows for a combination of low driving torque and high break torque, enabling stable fastening even with variations in pilot hole diameter and material thickness. (Patent pending) Additionally, it can be inserted steadily into the pilot hole, preventing angled entries. The time required for screwing is also shorter than that of screws conforming to JIS standards, contributing to increased productivity. 【Features】 ■ Capable of accommodating variations in pilot hole diameter and material thickness ■ Addresses variations in fastening torque of electric screwdrivers ■ Inserts straight without angling ■ Short tapping screws for thin plates, such as M4×6 *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

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• fastener

"Alki-Pa" is a series of high-strength lightweight nuts and collars made from aluminum alloy. It is a fastener developed as a dedicated component targeting the weight reduction of resin applications. Not only is it lightweight, but it also adheres very strongly when molded into resin, achieving strength that surpasses brass and steel nuts in pull-out and rotation resistance. Additionally, due to the properties of aluminum, it blocks radio waves and is not affected by magnetic fields. It is well-suited for automobiles and robots, where weight reduction and electronic control, such as in autonomous driving, are advancing. 【Features】 - Lightweight aluminum alloy - Steel 10.9 bolts break at the threads - From inserts to outserts - Compatible with thermoplastics and thermosetting resins - Blocks radio waves and is non-magnetic *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• aluminum
• fastener

"GIGAFIT" is a tapping screw that can be used with ultra-high tensile materials of 1180 MPa. It is made from materials that have a low risk of brittle fracture, featuring a hard surface and a soft core. It meets the needs for applications aimed at strength and weight reduction, such as bonding ultra-high tensile materials with other metals. [Features] ■ Can be used for tapping in ultra-high tensile materials ■ Low risk of brittle fracture ■ Soft core setting ■ Suitable for thread-forming fastener shapes *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

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• Other machine elements

The metal screw "Shinka" can be fastened into punch holes without barrelling in thin steel plates with a thickness of 0.3mm. It has a fastening strength that is about twice as high as conventional products when the female thread breaks and spins, allowing for secure fastening of thin steel plates with strong force. As a result, it is also resistant to loosening, and the torque required to loosen it is about twice that of conventional products. The time required for tightening is also half that of conventional products, enabling quick fastening. 【Features】 ○ No spinning or loosening even with thin steel plates ○ No barrelling required ○ Reduced work time ○ Lower material and storage management costs *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt

The "Alu-Arma(R) Nut" is a nut made from aluminum alloy. It is treated with a patented special hard anodized coating on the surface, ensuring electrical insulation and effectively preventing the occurrence of electrolysis. When mounted on CFRTP containing 40% carbon fiber and evaluated using the JIS saltwater alternating immersion method, it maintains corrosion resistance for 3,000 hours. 【Features】 ■ High risk mitigation for electrolysis ■ Synergy for weight reduction ■ Strong fastening retention performance ■ Total cost reduction ■ Two basic shapes available *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• nut

"Jushitaito®" is a tapping screw for resin that exhibits high anti-loosening performance even in harsh environments such as thermal changes and vibrations. By placing flutes at positions that divide the circumference into three or four equal parts, almost perpendicular to the screw lead, the screw threads become serrated. After tightening the screw, the resin springs back into these serrations, making it highly resistant to loosening. 【Features】 ■ Screw threads with flutes that are resistant to loosening ■ Low burden on resin due to flutes ■ Large screw pitch ■ Larger screw outer diameter ■ Trust and proven track record *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• Other machine elements

■ This is a tapping screw for resin. Compared to those with serrated threads, it has a very high axial force and is a product developed with the same concept as bolts. ■ It is a screw that is resistant to loosening and has high pull-out strength. ■ It has excellent repeatability and does not damage the boss. ■ It possesses mechanical properties similar to those of bolts. ■ It eliminates the need for insert nuts, achieving significant cost reduction. *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt

"Alki-Pa" is a series of high-strength lightweight nuts and collars made of aluminum alloy. Developed as dedicated components targeting the weight reduction of resin applications, these aluminum alloy fasteners are not only lightweight but also adhere very strongly when molded into resin, achieving strength that surpasses brass and steel nuts in pull-out and rotation resistance. Additionally, due to the properties of aluminum, they block radio waves and are not affected by magnetic fields. They are well-suited for vehicles and robots where weight reduction and electronic control, such as in autonomous driving, are advancing. 【Features】 - High-strength lightweight nuts and collars made of aluminum alloy - A6056 is a proven high-strength material that is safe and reliable for automotive bolts - For insert applications, ultrasonic press-fitting is primarily used, along with thermal press-fitting and screw-in insertion - Being made of aluminum alloy, they block radio waves and are not affected by magnetic fields - Compatible with materials including PP, PA, and even those containing glass fibers and carbon fibers - Shapes that can be inserted into very hard materials like epoxy resin are also available *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• aluminum
• fastener

"Evataite(R)" is a tapping screw characterized by low insertion torque. There are versions for metal and resin, and due to its excellent workability, it is widely used by automobile manufacturers. The female thread is formed by plastic deformation, and the complete threaded section closely adheres to this female thread, providing strong resistance to vibration and a low tendency to loosen. 【Features】 ■ Basic shape of the screw cross-section ■ Low insertion torque ■ Female thread formation through plastic deformation ■ Safe torque setting *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• Other machine elements

"Altrax(R)" is a tapping screw for light alloys such as aluminum and magnesium. It has a very high axial force, providing a fastening strength equivalent to or greater than that of bolts (machine screws). There is also minimal reduction in fastening strength due to environmental changes. Regular tapping screws are subjected to carburizing hardening, which raises concerns about brittle fracture; however, this product undergoes quenching and tempering, significantly reducing the risk of brittle fracture. 【Features】 - Easy screwing in due to a special tip shape (close to triangular) - The 33° thread angle results in a smaller volume for forming the female thread, leading to lower screwing torque - An ideally balanced thread profile in relation to the strength of light alloys - The cross-section of the screw is perfectly round - A large contact area with the mating material allows for stable long-term fastening *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

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• Other machine elements

The "TAPTITE 2000(R)" is a metal tapping fastener developed by CONTI/REMINC, particularly effective for tapless applications with diameters of M6 and above. The bolt cross-section has a trilobular shape. This design allows for easy screwing in with low torque. After screwing in, the fastener becomes resistant to loosening due to the tight fit with the mating material and the effect of spring back. It is a proven bolt standardized and widely used by many Western automobile manufacturers, including Mercedes, Volkswagen, BMW, Renault, Ford, and GM. 【Features】 ■ Trilobular thread profile ■ Female thread formation by rolling ■ Prevention of diagonal entry ■ Wide range of applications *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

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• Other machine elements

■ It is a screw that is difficult to spin even though it is a thin steel plate fastening. ■ It eliminates the need for nuts and bar processing, significantly contributing to the overall cost reduction in manufacturing. *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/*

• bolt

The "Shinka SD(R)" is a drilling screw that inherits the characteristics of "Shinka," boasting overwhelmingly high anti-rotation performance when used with thin steel plates. It can be screwed into materials without pre-drilled holes, making it less prone to rotation. This eliminates damage to the material caused by screw stripping and reduces the need for rework, contributing to lower material and labor costs. 【Features】 ■ Self-drilling ■ High breakaway torque ■ Short screwing time ■ Improved work efficiency for fastening equipment and construction materials ■ Achieves overall cost reduction *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• Other machine elements

"WIS" is a screw with an integrated washer. For thin plates, a play of less than 0.5 pitch below the washer is possible (when a spring washer is included). Additionally, by reducing the diameter of the shaft, interference with the internal thread can also be prevented. There is no risk of the washer falling off, significantly reducing the labor involved in tightening, and automatic tightening becomes easier. 【Features】 ■ Eliminates the hassle and cost of combining screws and washers ■ No waste due to loss of washers ■ No risk of washer falling off, significantly reducing labor in tightening ■ Easier automatic tightening ■ Simplifies purchasing and inventory management, eliminating waste and inconsistencies *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• Other machine elements

"Shinka(R)" is a tapping screw that can accommodate 0.3mm thin plates. Due to its four-thread design, it makes contact with the thin plate at four points, achieving stable fastening. This results in high breakaway (slip) torque, preventing slippage during screw tightening. Additionally, it works effectively with large pitches, allowing for quick fastening. It minimizes damage to valuable thin plate components and reduces product waste due to screw stripping or poor fastening, thereby improving yield. 【Features】 ■ Does not slip or loosen despite fastening thin steel plates ■ Eliminates the need for nut and burring processing ■ Achieves cost reduction and weight savings in fastening *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• Other machine elements

■ High Risk Mitigation for Galvanic Corrosion These are aluminum alloy nuts. They are treated with a patented special hard anodized coating on the surface to ensure electrical insulation and effectively prevent the occurrence of galvanic corrosion. When mounted on CFRTP containing 40% carbon fiber and subjected to corrosion resistance evaluation using the JIS saltwater alternating immersion method, they maintain corrosion resistance for 3,000 hours. ■ Synergy in Weight Reduction The specific gravity of aluminum armor nuts is one-third that of iron. This allows for weight reduction of both the material using CFRP and the nuts themselves simultaneously. ■ Strong Fastening Capability The pull-out strength exceeds that of conventional knurled insert nuts when mounted on CFRTP and pulled out. Additionally, the resistance to rotation and the strength of the internal threads are at the level where a bolt of strength class 10.9 would break when screwed in. The secret lies in the shape of the nut, which allows for easy flow of carbon fiber. ■ Contribution to Overall Cost Reduction The costs associated with galvanic corrosion measures that were previously necessary are reduced. This lowers the overall manufacturing costs, promotes the use of CFRP, and contributes to product weight reduction.

• nut
• Other Auto Parts
• fastener

"POLIS" is a screw that comes with a pre-installed resin washer. The screw is manufactured by pressing it into a resin washer after the surface treatment is completed, and then inserting it by applying a screwing rotation. This eliminates the need for washer installation, improving work efficiency. It is also used to prevent scratches on the mating material and enhance corrosion resistance. 【Features】 - Eliminates the need for washer installation - Improves work efficiency - Prevents scratches on the mating material - Enhances corrosion resistance - Reduces overall costs *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• Other machine elements

"Evablock" is a locking fastener that can be used with tapped screw holes. It has a special thread shape that bites into the female thread, increasing resistance and making it less likely to loosen. Without the need for design changes, it allows for an immediate switch from current fastening methods to those with locking functionality. 【Features】 ■ Low screw-in torque ■ Locking function ■ Suitable for lightweight alloys that are prone to loosening ■ Cost reduction ■ Change only the bolt without design modifications *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• Other machine elements

The "Aluama PT" is a high-strength aluminum alloy tapping screw developed specifically for resin, capable of tapping into hard resins like PPS as well as soft resins like PP. Not only does it contribute to weight reduction, but it is also effective in preventing a decrease in axial force after heat cycle loads due to the aluminum's coefficient of linear expansion being closer to that of resin than iron. 【Features】 ■ Safe material, lightweight, high strength ■ Capable of tapping into hard resin materials ■ Developed a specialized shape as an aluminum fastener for resin ■ Prevents decrease in axial force due to thermal environmental changes ■ Not affected by magnetic fields *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt

"Spirido" is a self-tapping screw for thin steel plates that accommodates variations in pilot hole diameter, driver torque, and plate thickness. This product achieves a wide torque difference due to its low driving torque and high breaking torque. This torque difference ensures stable fastening even when there are variations in the pilot hole diameter, plate thickness, or when the driver's torque is unstable, contributing to improved productivity for our customers. 【Features】 - Achieves low driving torque and high breaking torque with a newly developed special three-start thread! - Seats in a short time of approximately 1.5 rotations. 【Benefits】 - Accommodates variations in fastening conditions such as plate thickness and pilot hole diameter. - Ensures secure fastening even when the driver's torque is unstable. - Stabilizes fastening operations in overseas production and automation. - Prevents diagonal entry. - Reduces screwing time. *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• Other machine elements
• bolt

It is a special fastening component that causes the screw head to shear off at the targeted torque when tightened. Since it is fundamentally a screw, it is held in place by axial force. ■ Even with variations in tightening methods, consistent fastening can be achieved. ■ It can prevent over-tightening. ■ The screw head shears off at the end of fastening, allowing for visual confirmation of completion. ■ Specifications can be set to allow for easy removal with pliers or similar tools. ■ It can prevent tampering or unauthorized loosening. *For data or material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt

This is an introduction to the self-tapping screw "SPILEAD," which accommodates variations in pilot hole diameter, driver torque, and the thickness of the material being fastened. For tapping screws, managing the pilot hole diameter is crucial as they form female threads with male threads. "SPILEAD" is a self-tapping screw designed for use with thin metal sheets ranging from approximately 0.2mm to 1.0mm in thickness. It features a newly developed special three-start thread, characterized by low torque (DT) during insertion and high torque (ST) that breaks the material, with a significant difference between the two. This product serves as the standard for self-tapping screws for thin steel plates, contributing to improved fastening quality and productivity in production. 【Features】 - Low torque during insertion and high torque that breaks the material, with a significant difference. - Capable of absorbing variations in the insertion torque of electric drivers. - Exhibits strong adaptability to variations in pilot hole diameter and the thickness of the material being fastened. - Accommodates variations in fastening conditions such as plate thickness. *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• fastener

The "tapping screws for CFRP" are screws that can be used to tap and fasten carbon fiber reinforced plastics (CFRP) and carbon fiber reinforced thermoplastics (CFRTP), which are said to have a specific gravity of one-fourth that of iron and a specific strength ten times that of iron. This product prevents interlayer delamination of CFRP materials, providing excellent screw-in capability and high break torque. 【Features】 ■ Directly screws into CFRP or CFRTP with pre-drilled holes ■ Achieves fastening without interlayer delamination ■ Allows for setting a generous fastening torque *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• fastener

The "Delta PT(R)" is a tapping screw designed for use with resin, yet it maintains fastening through axial force, similar to bolts, allowing for very high fastening strength. It also has good reusability and can be used for component fastening that was impossible with conventional tapping screws. Additionally, it enables downsizing of tapping screws by leveraging high axial force. 【Features】 ■ Thread shape and female thread formation ■ Lead angle and pitch ■ Cross-section of the thread and stress distribution ■ Heat treatment and strength *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• Other machine elements

"Strux(R)" is a rivet stud that can be easily assembled with a simple press-in device for various metals. The counterpart material flows into the retention groove between the Torx-shaped protrusion and the sizing ring, securing it in place. High retention strength and anti-rotation effects can be expected. It can be manufactured from various carbon steels and stainless steels, and the counterpart materials can include steel, copper, and aluminum. Additionally, designs tailored to customer needs are possible. [Features] - Usable with plating - No special tools required - Compatible with various materials and designs *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

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• Other machine elements

■ Yamashina has been working on the development of aluminum bolts for nearly 10 years. ■ Through numerous trials and errors, including benchmarking against European car manufacturers, developing shapes to increase resistance to stress, researching surface treatments, and studying cold working conditions, we are now establishing a mass production system centered around A6056 and A7050 materials. We provide various know-how necessary for fastening, including fatigue resistance, changes in strength due to temperature, and changes in friction coefficients for fastening conditions. ■ We offer genuine aluminum bolts that can be safely used, along with our expertise, rather than just lightweight and high-strength aluminum bolts that are merely advertised. * For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt

Yamashina primarily engages in the manufacturing, processing, and sales of screws for domestic automobile manufacturers. Due to the high quality demanded by automotive-related customers, we not only ensure reliable quality but also meet the specified delivery dates. Furthermore, we are developing value-added products that reduce our customers' processing steps and lower costs. On-site, we are working to improve production efficiency while collecting data through IoT technology, constantly generating ideas from the field to enhance work efficiency. In 2017, we celebrated our "100th anniversary," launched the CFRP insert nut "Alu-Arma Nut," and introduced IoT at our headquarters factory, followed by the release of the high-tensile steel tapping screw "GIGAFIT" in 2018. Looking ahead, we believe that as smart technology continues to advance, we will increasingly focus on and deepen our engagement in the automotive and low-voltage markets, which are expected to become key players in next-generation growth industries such as robotics and service robots. Additionally, based on our extensive know-how and track record, we will implement fastener engineering and develop differentiated high-value-added products.

• bolt
• nut

At Yamashina, we offer a variety of specialized measuring equipment for fasteners that enables us to propose better fastening conditions. With the support of our excellent senior engineers, who possess extensive testing know-how backed by a long history and the latest technology, we conduct tests and analyze the results to suggest optimal fastening conditions to our customers. 【Test Items】 - Tensile strength (yield and fracture) - Shear strength - Fatigue testing (conducted externally) - Tightening fracture test - Tightening relaxation test - Torque-axial force relationship examination test - Axial force creep confirmation test - Threading rotation speed dependency test - Temperature distribution test during threading - Friction coefficient calculation - Cold and heat testing - Alternating immersion test in saltwater - Salt spray test - Electrical insulation evaluation test - Ground bolt conductivity test - Chip analysis - Vibration test (bolt standalone evaluation) - Plasticity range examination, etc. Please note that the test content may be restricted based on bolt diameter and length. Additionally, costs may be high depending on global requirements and the types of tests. There are also tests not listed above that can be conducted using external testing facilities, and reports can be provided for those as well. Please feel free to consult us, including for cost estimates.

• bolt
• nut

On May 14, 2019 (Tuesday), at the seminar room of the Tokyo headquarters of Nikkan Kogyo Shimbun, the CFRP Symposium 2019 in Tokyo was held, organized by Nikkan Kogyo Shimbun! The first part featured a keynote speech by Professor Kazuaki Nishiyabu from Kinki University’s Faculty of Science and Engineering titled "Latest Trends in Industrial Applications of CFRP and Mass Production Technologies for Thermoplastic CFRP." The second part included case studies presented by companies. Our company also presented a case study titled "Development of Aluminum Alloy Insert Nuts for CFRP to Avoid Electrolytic Corrosion," lasting approximately 30 minutes. 【Overview】 1. What is CFRP? Why CFRP? 2. Thermosetting CFRP and Thermoplastic CFRP 3. Thermoplastic CFRP Materials 4. Manufacturing Methods for Thermoplastic CFRP 5. Fusion and Mechanical Joining of Thermoplastic CFRP 6. Recycling Technologies for Thermoplastic CFRP 7. Latest Technological Trends in Thermoplastic CFRP in Europe and the United States

• nut
• bolt

Our company conducts testing for screws. We have a variety of specialized measuring instruments for fasteners that enable us to propose better fastening conditions. Furthermore, our excellent senior engineers, backed by a long history of testing know-how and the latest technology, will suggest optimal fastening conditions to our customers. Additionally, we also offer services such as "production of test bosses" and "simple analysis of hexavalent chromium using fluorescent X-ray." 【Contents of Testing Items (Screw Testing)】 ■ Tensile Strength (Yield and Fracture) ■ Shear Strength ■ Torque-Axial Force Relationship Testing ■ Axial Force Creep Confirmation Testing ■ Screw-in Rotation Speed Dependency Testing, etc. *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Contract measurement
• Contract Analysis

At Yamashina, we manufacture various head shapes, including recesses, through cold processing. We can combine various drive systems such as cross slots, Torx, and hex sockets with head shapes like pan heads and flange shapes, allowing for a wide range of processing options. Additionally, special processing such as tamper-proof features is also possible. 【Available Combinations】 ＜Drive Systems＞ ■ Cross slot ■ Torx ■ Hex socket, etc. ＜Head Shapes＞ ■ Pan head ■ Flange shape, etc. *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

• bolt
• Other machine elements
• Processing Contract

"Shinka" is a tapping screw that can be used on materials as thin as 0.3mm without the need for a burring process. Typically, fastening thin plates involves screwing into a burring-processed hole. This is necessary because strong fastening cannot be achieved without ensuring contact with the screw through burring. However, this requires additional processing time for burring, and careful handling is needed to avoid damaging the burring after processing. Moreover, it incurs a lot of labor and costs, and can lead to fastening failures due to burring damage. Our product allows tapping fastening in a pre-drilled hole without burring, even on 0.3mm thin plates. It can achieve fastening with twice the torque of conventional products without burring. Using thin plates allows for weight reduction and eliminates unnecessary costs associated with burring processing and its maintenance. This results in significant cost reduction and weight savings due to the use of thin plates! It is a highly popular product. [Features] ■ Only a punch hole is needed! No nuts or burring required!! Greatly contributes to reducing processing and management costs. ■ It is less likely to spin even at twice the torque of conventional products, allowing for safe fastening with ample torque management! ■ The costs associated with discarding materials due to spinning are also significantly reduced.

• fastener
• bolt