オータ List of Products and Services

A half-thread refers to a product where the entire threaded section below the head is not threaded, and it does not mean "half is threaded." The length of the threaded section varies depending on the product and size. There is a calculation method used when you want to know the length of the threaded section. 【For hex bolts】 M(thread designation)x2+6 / For lengths of 130 or more: Mx2+12 / For lengths of 220 or more: Mx2+25 【For hex socket bolts (caps)】 Mx2+12 (caps are not related to length) (Example) For a half-thread hex bolt M10x60: 10x2+6=26, so the threaded section is approximately 26. *For more details, you can view the related links. For more information, please download the PDF or feel free to contact us.

• others

Originally, flat washers were created based on the international standard ISO 7089 to establish JIS B 1256. Although it remains JIS B 1256, the dimensions have gradually changed over the years, leading to the distinction between old and new versions. 【JIS B 1256: 1963】The so-called old JIS. If it is marked as "P=〇" in the SEMS, this refers to the dimensions of this flat washer. 【JIS B 1256: 1978】The so-called new JIS. Generally, it is often referred to as "ISO." In SEMS, it is marked as "I=〇." 【Old JIS B 1256: 1998, JIS B 1256: 2008】These versions are currently not circulating in the market. *For more details, please refer to the related links. For further information, feel free to download the PDF or contact us.

• others

Semus screws (integrated screws) are products that incorporate flat washers or spring washers into the screw. There are different types of Semus, and the naming and notation change depending on what is integrated. When requesting Semus, you will need to choose the type of head you prefer. *For more details, you can view the related links. For further information, please download the PDF or feel free to contact us.*

• others

There are. Depending on the presence of iron and the usage environment, it may rust. There are also stainless steels that are resistant to rust, so please feel free to contact us. Additionally, we have posted other frequently asked questions at the link below, so please take a look. *For detailed information, you can view it through the related links. For more details, please download the PDF or feel free to contact us.

• others

Stainless steel (SUS) also has magnetic properties. When making SUS products after producing iron products, the magnetism may transfer. Since the magnetic properties can vary by lot, it is difficult to arrange for a "lot that preferably does not stick to magnets." For some products, it may be possible to procure SUS316 or SUS316L, which have lower magnetism, so please consult with us. *For more details, you can view them through the related links. For more information, please download the PDF or feel free to contact us.

• others

Let me introduce our strengths. We handle the preparation of various documents and comply with chemSHERPA. By having dedicated personnel create these documents, we have accumulated expertise, allowing us to efficiently manage requests for environmental-related document preparation, which have been increasing year by year. We can handle all items supplied by our company collectively. Additionally, we have established a management system that ensures thorough barcode management and traceability. With a rich inventory tailored to meet customer needs, we can respond quickly, including immediate shipping. [Some of Ota's strengths] ■ Investigation of contained substances and chemSHERPA compliance ■ Barcode management and inventory management system ■ Complete in-house inspection system ■ Delivery deadline compliance management ■ Procurement network *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce the "screws and related products" that we handle. By sourcing highly distributable products from both domestic and international suppliers and maintaining regular stock, we can respond quickly. Please feel free to consult us regarding individual pieces or small boxes. We can also accommodate requests for small bagged sets based on the required quantity. Our sales representatives and logistics services ensure direct delivery without incurring unnecessary costs for small quantities. 【Features】 ■ Sourcing highly distributable products from domestic and international suppliers ■ Quick response enabled by maintaining regular stock ■ Consultation available for individual pieces or small boxes ■ Possible to accommodate requests for small bagged sets based on required quantity (assembly support) ■ Direct delivery by sales representatives and logistics services *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce our "Resin and Rubber" products. We can accommodate various shapes of resin and rubber products through machining. Please feel free to contact us when you need assistance. 【Examples of Processing (Partial)】 ■ Machining Process 1 ■ Machining Process 2 ■ Machining Process 3 ■ Machining Process 4 ■ Machining Process 5 ■ Machining Process 6 *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce our company's "forging and header" processing. We accommodate processing of various materials such as brass and electrical copper. We also have samples of header components available. Please feel free to contact us when you need our services. 【Processing Examples (Partial)】 ■ Brass 1 ■ Brass 2 ■ Brass 3 ■ Electrical Copper 1 ■ Electrical Copper 2 ■ Electrical Copper 3 *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce our "Press, Sheet Metal, and Welding" services. We accommodate various processing needs, including welding of SUS304 and nickel plating on brass. Please feel free to contact us when you need our services. 【Processing Examples】 ■ Welding: Welding SUS304 ■ Laser: Laser 1 ■ Press: Nut welding ■ Turret Punch: Brass nickel plating, Turret Punch 1 *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce our "Metal Cutting" services. We can accommodate various machining processes such as turning, milling, and machining. We handle a wide range of work, from Ayame knurled materials to polishing SK materials and keyway processing. Please feel free to contact us when you need our services. 【Examples of Processing (Partial)】 ■ Turning - From Ayame knurled materials - From vertical knurled materials - Gold plating - Trapezoidal screws ■ Milling - Keyway processing - Two-sided machining *For more details, please download the PDF or feel free to contact us.

• Processing Contract

In the process of electro-galvanizing, hydrogen is generated, which can infiltrate the interior of the bolts, creating voids and reducing their strength (hydrogen embrittlement). Therefore, for bolts with a strength of up to 10.9, it is acceptable to perform a baking treatment (heating the bolts to release hydrogen) after plating. However, for bolts with a strength of 12.9, hydrogen is less likely to escape, leading to hydrogen embrittlement, which poses a risk of the bolt head breaking off during tightening. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

• Screw

Our company, as a supplier of parts to a diverse range of industries, has established a quality management system and an environmental management system based on ISO standards, and we are committed to the following initiatives for continuous improvement. 【Quality and Environmental Policy】 ■ First, we will maximize the responsibilities and roles of each department, improve corporate quality in products, costs, and responsiveness to meet requirements in collaboration with our partners (cooperating factories), and gain the trust and satisfaction of our customers. ■ Second, we will comply with relevant laws and regulations, as well as other agreed-upon requirements, actively engage in substance content investigations, and ensure that all employees understand and practice the importance of preventing environmental pollution and protecting the environment. ■ Third, we will promote the use of 5S, improve operational efficiency, and reduce environmental impact through the reduction of defective products, aiming to enhance environmental performance. ■ Fourth, we will make the most of various tools and resources to cultivate employees who think and act independently for improvement. *For more details, please refer to the PDF document or feel free to contact us.

• nut
• bolt
• Other machine elements

We would like to introduce the equipment owned by Ota Vietnam Co., Ltd. Our factory is equipped with facilities capable of supporting everything from prototype development to monthly deliveries during mass production. We have established a system that allows us to provide products at a low cost while maintaining Japanese quality standards. After conducting initial inspections, intermediate inspections, and final product inspections using image measurement machines and surface roughness testers, we perform a complete inspection of all shipped products by trained inspectors from inspection agencies, aiming for zero defects. 【Equipment Owned (Excerpt)】 ■ NC Lathe ■ General-purpose Lathe ■ Machining Center ■ General-purpose Milling Machine *You can download the English version of the catalog. *For more details, please refer to the PDF materials or feel free to contact us.

• nut
• bolt
• Other machine elements

Ota Corporation is a company engaged in the manufacturing of precision machined products, wholesale sales of screw-related components, and the creation of products based on customer drawings. We can process made-to-order products from approximately 300 companies (factories) both domestically and internationally, and we offer the option to place a single order for assembly and secondary processing. Additionally, we maintain a stock of around 50,000 fastening components for immediate delivery, ensuring thorough management of both quality and delivery times to provide our products. If you have any inquiries regarding screws and precision machining, please feel free to consult with us. 【Business Activities】 ■ Manufacturing of precision machined products ■ Wholesale sales of small screws, bolts, nuts, various pins, rivets, and other screw-related components used in a wide range of products from everyday items to the latest innovations ■ Creating products based on customer drawings *For more details, please download the PDF or feel free to contact us.

• nut
• bolt
• Other machine elements