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Screw Product List

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Resin Tapping Screw "DELTA PT"

Ultimate tapping screw for resin

"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

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Thin plate tapping screw 'USCA'

Lightweight, compact, and optimized tapping screws for thin plates to meet extensive needs.

"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

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Resin Tapping Screw "Alu Armor PT"

From soft resin to hard resin! High-strength aluminum fasteners clad in armor.

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

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Resin tapping screw "Jushitite(R)"

Tapping fasteners that provide a strong locking effect when used with all types of resin materials.

"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

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Achieve a reduction in manufacturing costs! Thin plate tapping screws *Video available

Nut, no burring process required! Contributes to overall cost reduction, tapping screws for thin plates.

The 'Shinka' tapping screw is designed specifically for thin plates and can be used on thin steel sheets as thin as 0.3mm. It can be tightened with approximately twice the torque of our conventional products, making it less likely to spin or loosen even on thin sheets. This eliminates the need for component disposal or burr processing, significantly reducing manufacturing costs. 【Features】 ■ Thin plate fastening ■ Same performance even after reuse ■ No burr processing required ■ No nuts required ■ Screw thread shape that is less likely to spin ■ Lead angle and pitch that allow for quick fastening ■ Significant reduction in parts, processing, and management costs *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/

  • fastener
  • bolt

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Anti-loosening screw "Ebalock"

Prevents loosening with a special screw thread shape! A locknut suitable for use with lightweight alloys.

"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

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Tapping screw for thin plates SPILEAD

Improved productivity by accommodating variations in the pilot hole diameter of the counterpart material! This is a tapping screw for thin plates!

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/

  • bolt
  • fastener

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High-speed screw insertion is possible!! Resin screw EVO PT

This is a tapping screw that can be driven at high speeds.

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

  • bolt
  • simulator
  • Stress Analysis

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Straight entry, excellent reusability tapping EVO PT

By entering straight into the boss, we stabilize the quality of the joint. With a thread shape created by natural science, it is also excellent in reusability and can be used multiple times.

■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.

  • bolt
  • fastener

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