We will restore the crushed screw using oversized processing. We will respond with on-site work.
We will restore aluminum, cast iron, and cast steel damaged female threads, bolt holes, and broken female threads to their original size.
This is a high-strength one-sided bolt that leads to shortened construction periods and reduced costs through one-sided installation.
Can be installed with commercially available impact wrenches, no special tools required! The unique screw shape achieves high strength, vibration resistance, and water tightness. 【*On-site demonstrations are available】
An adjustable device that allows for easy height adjustment of the machine. It is highly durable and has received high praise from domestic and international customers for its quality that exceeds its price.
We will repair the casting crack without applying heat. Since no heat is applied, we will repair it without causing any distortion.
We will restore aluminum, cast iron, and cast steel damaged female threads, bolt holes, and broken female threads to their original size.
Permanent solution for screw hole repairs! Metal crack repair without applying heat! Crack repair that generates no thermal distortion at all.
This is a high-strength one-sided bolt that can be fastened on one side in areas where standard high-strength bolts cannot be installed. It is certified by the Minister of Land, Infrastructure, Transport and Tourism and has over 20 years of sales experience.
Over 40,000 stock items. Regular stock items are shipped on the same day for orders placed by 2 PM. We support everything from research and development to mass production. For large quantities, we will provide a separate estimate!
Washer for completely preventing the simultaneous rotation of bolts, suitable for M12 to M72.
Welding-free method! We repair metal cracks without applying heat.
Ultra-thin film, high corrosion resistance - a dream hybrid collaboration! Chrome-free surface treatment - Lafre (LAFRE)
Bolts provided (M3 to M64) can be used to manufacture bolt axial force sensors! From small screws for vehicle-mounted circuit boards to bolts for casting molds! Capable of withstanding temperatures up to 300°C!
Using insulating bolts allows for electrical insulation between the flanges and between the flange and port nut, thereby preventing galvanic corrosion.
Can be used as a permanent solution for broken screw holes! Screw hole repair!
We will repair cracks that have occurred in metals without applying heat. Repairs can be made on aluminum, cast iron, cast steel, stainless steel, and more.
We will repair the damaged screw holes, bolt holes, and stripped threads to their original size. We will reinforce the damaged screw holes.
High-performance equipment and a cream room are fully equipped to achieve high-quality metal coating!! Compatible with iron, stainless steel, brass, aluminum, and various die-cast materials.
High-performance equipment and a cream room are fully equipped to achieve high-quality metal coating!! Compatible with various resin products such as ABS, PP, and polycarbonate.
Nikken Kogyo Co., Ltd. offers high-quality "coating" of metals and resins with high-performance equipment and a cream room! We can coat a variety of products!!
High-performance various preprocessing equipment and cream room are fully equipped to achieve high-quality painting of metals and resins! Streamlining product creation! From mold forming to preprocessing, painting, and printing, etc.
Nikken Kogyo offers high-quality painting for metals and resins with a variety of high-performance equipment and a cream room! We can accommodate various products!!
High-performance various pre-treatment equipment and cream room are fully equipped to achieve high-quality coatings for metals and resins! Streamlining product creation! From mold forming to pre-treatment, coating, and printing, etc.
Industry-leading professionals manage everything from molds and molding to painting and printing assembly in a one-stop service! We have numerous achievements with major manufacturers. Please feel free to consult with us.









































































































