富士セイラ List of Products and Services

The "EVO PT(R)" is a forming screw for thermoplastic resins with an original screw shape that is easy to tighten without damaging the resin. The valley section features a smooth curve design developed through biomimicry, ensuring reliability even in demanding applications. Additionally, the screw thread has an original 26° angle, making it compatible with various thermoplastic resins and reducing radial loading. 【Features】 ■ Total friction reduction during internal thread forming ■ Seating torque remains constant regardless of the length of the fastening section ■ Seating torque remains constant regardless of the screw engagement length ■ Commonality of screws and seating torque can be achieved at different locations ■ Large torque window with low seating torque *For more details, please refer to the PDF document or feel free to contact us.

• Other cutting tools

We would like to introduce our waterproof and oil-proof screw, the "Seal Up Screw." By automatically incorporating a "flat type sealing packing" with a large contact area into the annular groove of the seating surface, the waterproof, oil-proof, and dust-proof performance is significantly improved. Since the inner diameter of the sealing packing is smaller than the outer diameter of the screw, it does not fall off, and due to the large contact area, it can be used simply by replacing the screw without changing the current hole diameter. 【Features】 ■ No falling off of the sealing packing ■ Can be used immediately by just replacing the screw ■ Significant improvement in waterproof, oil-proof, and dust-proof performance *For more details, please refer to the PDF materials or feel free to contact us.

• Other machine elements

Fujiseira Co., Ltd. manufactures and sells screw parts and machined components, as well as selling labor-saving devices, various mechanical parts, and various surface-treated products. Our strengths include a sales record of hundreds of millions of "Seal Up Screws" for waterproof mobile phones with a defect rate of 0%, and the delivery of millions of units of the resin tapping screw "DELTA-PT" for laptops. Additionally, we manufacture and sell jigs and molds along with die-cast parts. Please feel free to contact us when needed. 【Our Strengths】 ■ Sales record of hundreds of millions of "Seal Up Screws" for waterproof mobile phones with a defect rate of 0% ■ Delivery of millions of units of the resin tapping screw "DELTA-PT" for laptops ■ Development of washer integration for the resin tapping screw "DELTA-PT," supplied to automotive manufacturers ■ Our fastening components have been adopted in the supercomputer "Fugaku" following "K" ■ Long-selling "precision screws for hard disks" produced overseas with the same QCD as domestically *For more details, please refer to the PDF document or feel free to contact us.

• Other electronic parts
• Other molds
• Contract manufacturing

The "DELTA PT(R)" is a forming screw for thermoplastic resins that is easy to tighten without damaging the resin. With a thread angle of 20°, it penetrates sharply into the mating material, reducing wear resistance. The plastically deformed mating material moves smoothly to the bottom of the valley during screwing. Due to the large contact area of the threaded engagement, it is resistant to loosening and boasts high fastening strength, allowing for size reduction in nominal diameter and screw length. 【Features】 ■ The thread angle of 20° allows for sharp penetration into the mating material, reducing wear resistance. ■ The plastically deformed mating material moves smoothly to the bottom of the valley during screwing. ■ The large contact area of the threaded engagement makes it resistant to loosening. ■ High fastening strength allows for size reduction in nominal diameter and screw length. ■ Minimal damage to the mating material enables repeated screwing. *For more details, please refer to the PDF document or feel free to contact us.

• bolt

We handle the "Seal Up® Screw." By automatically incorporating a flat-type sealing packing with a large contact area into the annular groove of the seating surface, we have significantly improved waterproof, oil-proof, and dust-proof performance. Since the inner diameter of the sealing packing is smaller than the outer diameter of the screw, there is no risk of it falling out. It can be used simply by replacing the screw, even with the current hole diameter. 【Features】 ■ Significantly improved waterproof, oil-proof, and dust-proof performance ■ No risk of falling out due to the inner diameter of the sealing packing being smaller than the outer diameter of the screw ■ Can be used simply by replacing the screw, even with the current hole diameter ■ Made in Shinagawa brand certified product ■ Trademark registration No. 5757876 *For more details, please refer to the PDF materials or feel free to contact us.

• bolt

We handle "spacers" at our company. They are suitable for use as spacers to maintain a consistent distance when stacking printed circuit boards. Please choose the size according to your usage conditions. 【Features】 ■ Maintains a consistent distance when stacking printed circuit boards ■ Available in various sizes *For more details, please refer to the PDF document or feel free to contact us.

• bolt

The "Full Lock Screw (R)" is a screw that can completely secure thin plates. The screw shaft diameter is smaller than the inner diameter of the female thread, preventing contact with the female thread, allowing for the fastening of thin plates. It resolves screw fastening troubles. It is compatible with recess (bit hole) and Fuji Lock (JIS: hexalobular hole). It is suitable as a screw for terminal blocks. 【Features】 ■ Can completely secure thin plates ■ Resolves screw fastening troubles ■ Compatible with recess (bit hole) and Fuji Lock (JIS: hexalobular hole) ■ Suitable as a screw for terminal blocks ■ Strength is equivalent to that of a small screw with washer (JIS B 1188: 1995) *For more details, please refer to the PDF document or feel free to contact us.

• bolt

We handle "Press Studs (R)." They can be installed with a plate thickness starting from 0.8mm, and they do not protrude from the surface or back of the base material, resulting in a flat finish. Due to their special shape, they are strong in adhesion, seismic resistance, and torque. The installation method for the press stud involves drilling a hole in the metal plate and pressing it in so that the head is flat. The pressing method can be easily performed using a press or similar equipment. We also manufacture and sell press studs with a thickness of 1.0mm. 【Features】 ■ Can be installed with a plate thickness starting from 0.8mm ■ Does not protrude from the surface or back of the base material, resulting in a flat finish ■ Strong in adhesion, seismic resistance, and torque due to special shape ■ Pressing method can be easily performed using a press or similar equipment ■ All domestic products managed entirely within the country from manufacturing to sales *For more details, please refer to the PDF document or feel free to contact us.

• bolt

Our company offers "looseness prevention treatment." A reusable looseness prevention processing technology. It demonstrates its effectiveness in preventing screw loosening in equipment where vibrations occur. Please utilize it for significant efficiency improvements, simplification, and cost reduction in on-site operations. 【Features】 ■ Reusable looseness prevention processing technology ■ Effectively prevents screw loosening in equipment where vibrations occur ■ Significant efficiency improvements, simplification, and cost reduction in on-site operations *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

We handle "image sorting devices." For parts such as shafts, sheet metal and pressed components, and plastic molded products, manual dimensional measurement sorting by inspectors is impractical for mass-produced items. Our device targets machined parts and enables dimensional measurement sorting. If you want to automatically sort such products or increase the inspection criteria, please consult with us. We can customize according to your needs. [Features] ■ A device targeting machined parts ■ Enables dimensional measurement sorting for parts such as shafts, sheet metal and pressed components, and plastic molded products ■ Customizable based on your requirements *For more details, please refer to the PDF document or feel free to contact us.

• Automatic sorting machine

We handle "hexagonal fittings." By transitioning from cutting processing to forging processing, we achieve zero chip discharge, contributing to environmental conservation. We have a quality assurance system that enables 100% inspection with automatic inspection equipment, achieving zero defective outflow. 【Features】 ■ Transitioning from cutting processing to forging processing to achieve zero chip discharge ■ Contributing to environmental conservation ■ Capable of 100% inspection with automatic inspection equipment, achieving zero defective outflow ■ Quality assurance system ・Non-electrolytic plating of the internal bottom of the female thread, unprocessed threads, and spring washer removal *For more details, please refer to the PDF document or feel free to contact us.

• bolt

Fuji Seira Co., Ltd. has been engaged in the manufacturing and sales of metal components, starting with precision screws, since its establishment in 1927 (Showa 2). Even when simply referred to as "screws," we have continued to focus on "monozukuri" (the art of craftsmanship) and consistently pursue the high-precision technology required by the times. By promptly introducing the latest manufacturing equipment and inspection devices, along with thorough cost management, we are able to provide our customers with services that are always a step ahead. 【Main Business Activities】 ○ Manufacturing and sales of general screw components and specialty fasteners ○ Manufacturing and sales of special cold forged components ○ Manufacturing and sales of precision machined components ○ Manufacturing and sales of forged components ○ Manufacturing and sales of die-cast components For more details, please contact us or download our catalog.

• nut
• bolt
• Other molds

Our company responds to the diverse needs of our customers. Please feel free to consult us regarding materials, processing (various types of plating and chemical treatment), delivery times, etc.

• nut
• bolt