We will respond to all situations.
Our company has focused on the transportation equipment field for two-wheeled and four-wheeled vehicles, utilizing advanced processing technologies that meet high specifications in terms of materials, techniques, and strength, tailored to specific usage locations, environments, and purposes, to provide a wide variety of fastening components. Leveraging our rich experience and achievements cultivated in the transportation equipment sector, we will continue to provide fastening components that can withstand all kinds of harsh conditions.
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basic information
● Engine-related parts - High-strength bolts - Parts requiring precision and high accuracy - Parts requiring airtightness ● Exhaust system parts - Parts requiring heat resistance ● Body-related parts - Lightweight parts - Insert parts ● Chassis-related parts - Resistance to loosening ● Others - Lightweight material fastening technology proposals - Assembly technology proposals We handle various parts beyond the above.
Price range
Delivery Time
Applications/Examples of results
1. Engine components 2. Exhaust components 3. Body components 4. Chassis components 5. Others
Detailed information
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High-strength bolts Material selection, shape, and heat treatment that consider fatigue, loosening, and delayed fracture are realized. We also propose fastening methods.
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Precision High Accuracy Parts with precision that directly affects product performance, such as engine components and machine parts, are met with advanced technological capabilities to meet extremely high demands for accuracy and quality.
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Air-tightness For parts that require airtightness, such as oil reservoirs and liquid/gas passages, traditional methods required machining of the seating surface. We have developed a technology that ensures a high level of airtightness through only forging processes. This has achieved significant cost reductions.
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Heat-resistant bolts made from materials such as SNB16 and SUH660, which have excellent heat resistance. It also accommodates surface treatments for anti-seizing.
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Lightweight bolts made of materials such as aluminum, titanium, and resin. For titanium, we have achieved solid solution precipitation (up to 1100 MPa class). It is also possible to apply surface treatment to prevent galling. There is a proven track record of use in harsh racing conditions, receiving high praise.
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Insert parts We provide parts that are inserted into resin, cast parts, and more, with optimal materials, shapes, and processing methods. We validate and propose from all angles, including applications, installation locations, required fastening strength, and tightening torque.
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We propose measures to prevent loosening suitable for all usage conditions, including vibration, forward rotation, and reverse rotation. If you are experiencing issues with loosening, please feel free to contact us.
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Lightweight Materials Joining Technology We propose lightweight materials such as high-strength steel plates, aluminum, magnesium, and resins, which will be increasingly used in the future. We provide fastening components that take into account the characteristics of each material.
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Assembly technology We propose cost reduction for fastening as a means to improve workability during assembly and reduce man-hours, including anti-jamming bolts, paint stripping bolts, blind rivets, and nuts.
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Company information
Maruichi is a professional group specializing in "fasteners" and small parts. As a technology development manufacturer that supports all types of fastening components, we contribute to society by providing a variety of products centered around small parts, regardless of materials or shapes. Our main products include screws such as bolts and nuts, plastic parts, fasteners, and machined products. We also cater to special requests from customers, with a product lineup exceeding 10,000 items.