OHTA CO., LTD. Product Lineup

This document is a presentation that introduces a comparative analysis of the mechanical properties of SNB23 material and equivalent materials. It includes basic characteristics such as the chemical composition of SNB23 material, its main applications, and its positioning within JIS standards, as well as mechanical properties like tensile strength and yield strength. The document compares the mechanical properties of SNB23 material with those of equivalent materials, providing guidelines for appropriate material selection. [Contents (partial)] ■ Introduction ■ Basic characteristics of SNB23 material ■ Mechanical properties of SNB23 material ■ Criteria for selecting equivalent materials ■ Comparison of SNB23 material and equivalent materials *For more details, please download the PDF or feel free to contact us.

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This document is a technical material that explains the distinction between CAP screws and hex bolts, which are important in machine design and construction sites. It summarizes the basic information and advantages of both, including differences in head shape, tools used, required space, and tightening force, in an easy-to-understand manner. It is a useful reference, so please take a moment to read it. [Contents (partial)] ■ Basics of CAP screws and hex bolts ■ Advantages of CAP screws ■ Advantages of hex bolts ■ Distinction points: Space ■ Distinction points: Tightening force *For more details, please download the PDF or feel free to contact us.

• bolt

This document is a technical explanation regarding the differences in strength classifications of hexagon socket bolts. It includes definitions and features, general applications, and the importance of strength classifications as basic information about hexagon socket bolts. The overview of strength classifications explains each grade from 4.8 to 12.9, so please make use of it. [Contents] ■ Basic information about hexagon socket bolts ■ Overview of strength classifications ■ Hexagon socket bolts of M22 and above ■ Reasons for differences in strength classifications ■ Effects and countermeasures of strength classification differences ■ Summary *For more details, please download the PDF or feel free to contact us.

• bolt

This document is a technical material comparing hexavalent chromium and trivalent chromium. It includes the basic principles, purposes, and applications of chromate treatment, as well as the advantages and disadvantages of both hexavalent and trivalent chromium. Information regarding regulatory frameworks such as the RoHS directive is also included, which can assist in the selection of surface treatments. 【Contents (partial)】 ■ What is chromate treatment? ■ Advantages and disadvantages of hexavalent chromium ■ Advantages and disadvantages of trivalent chromium ■ Comparison of rust prevention effects ■ Cost comparison *For more details, please download the PDF or feel free to contact us.

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This document is an analytical report explaining the price trends of φ50 SS400 equivalent and SUS304 from 2020 to 2025. It includes an overview of the steel and stainless steel market from 2020 to 2025, as well as the price trends of SS400 round bars and SUS304 round bars. We hope this analysis will assist in your future procurement strategies and cost management. 【Contents (partial)】 ■ Overview of the steel and stainless steel market from 2020 to 2025 ■ Price trends of SS400 round bars (φ50) ■ Price trends of SUS304 round bars (φ50) ■ What is processing roll margin cost? ■ Price trends of processed SS400 round bars (φ50) *For more details, please download the PDF or feel free to contact us.

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This document provides a detailed analysis of the cost fluctuations of machined parts and sheet metal parts from 2020 to 2025. It includes the factors and impacts of changes in material costs, processing costs, energy costs, and plating costs, primarily driven by disruptions in the global supply chain and soaring energy prices. Recommendations for future cost management are summarized. [Contents (partial)] ■ Background of cost fluctuations: Economic environment from 2020 to 2025 ■ Fluctuations in material costs for machined parts ■ Fluctuations in material costs for sheet metal parts ■ Variations in processing costs and energy costs related to processing ■ Fluctuations in plating costs *For more details, please download the PDF or feel free to contact us.

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This document is a training material that allows you to learn the essential knowledge of screws, bolts, and hexagon socket bolts in the assembly manufacturing industry. It provides clear explanations of the types and characteristics of screws, the names of their parts, the features of hexagon socket bolts, and strength classifications. It also covers applications in assembly manufacturing and how to read drawings. Please make use of it. 【Contents (partial)】 ■ What are screws, bolts, and hexagon socket bolts? ■ Applications of screws and bolts in assembly manufacturing: Learning through specific examples ■ How to read drawings: Interpreting screw standards ■ Screw selection: Choosing the right screw ■ Precautions for use: Preventing accidents *For more details, please download the PDF or feel free to contact us.

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This document is a proposal that explains the benefits and cost-effectiveness of forging in metal processing. It clearly outlines the basics of forging, the main differences from machining and casting, as well as the advantages and disadvantages of forging. It also includes information on initial costs and cost comparisons, so please take a moment to read it. 【Contents (partial)】 ■ What is forging? ■ Main differences from machining and casting ■ Advantages of forging ■ Disadvantages of forging ■ Expected effects *For more details, please download the PDF or feel free to contact us.

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This document is a presentation material that introduces the basic knowledge of export control regulations necessary for sales representatives. It covers the fundamentals of what export control is, the legal framework including the Foreign Exchange and Foreign Trade Act, and an overview of the export control system. It also includes practical points for sales representatives, as well as examples of violations and associated risks, so please take a moment to read it. 【Contents (partial)】 ■ What is export control? ■ Legal framework of export control ■ Overview of the export control system ■ Main types of regulations: list regulations and catch-all regulations ■ Practical points for sales representatives *For more details, please download the PDF or feel free to contact us.

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This document is a technical material that explains the thread tolerances of the old JIS grades 1 to 3 and the new JIS. It focuses on the tolerances for M6 coarse thread bolts/taps, detailing the importance of thread tolerances and providing an overview of both the old and new JIS. It can be useful for ensuring the compatibility and assembly of threaded components. 【Contents (partial)】 ■ Importance of thread tolerances ■ Overview of old JIS thread tolerances ■ Overview of new JIS thread tolerances ■ Comparison of M6 coarse thread internal thread tolerances (taps) ■ Comparison of M6 coarse thread external thread tolerances (bolts) *For more details, please download the PDF or feel free to contact us.

• Screw

The RUSPERT treatment significantly enhances the corrosion resistance of traditional electroplating and hot-dip galvanizing. It allows for colorization, making it possible to match the landscape. Since it is a composite coating treatment with plating, it can adapt to various environments. Additionally, because the treatment temperature is below 200°C, it does not affect the physical properties of the product, and it greatly reduces galvanic corrosion (corrosion due to contact between dissimilar metals) on aluminum materials and highly corrosion-resistant plated sheets. 【Features】 ■ Corrosion resistance ■ Corrosion resistance of damaged areas ■ Color variations ■ Low-temperature treatment ■ Reduction of galvanic corrosion *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"RUSPERT ZERO・STAIN" is a revolutionary surface treatment technology that enhances the corrosion resistance of zinc-nickel alloy plating, designed as a complete chrome-free specification without chromate treatment, serving as an alternative to stainless steel. By forming a thin baked film on a uniform zinc-nickel alloy plating layer, the fitting of fastening components such as bolts and nuts becomes smoother, eliminating the need for over-tapping. The robust baked film exhibits high corrosion resistance. By applying two thin layers, stable shielding effects and high corrosion protection can be achieved. 【Features】 ■ Environmentally friendly ■ High corrosion resistance ■ Lubricity ■ Fit ■ Appearance *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"DISGO RINTAS" is a rust prevention treatment technology that excels in edge coverage, utilizing a high-hardness metallic zinc layer and the specialized DISGO processing technique developed over many years by Nippon Rust Part Co., Ltd. It connects a high corrosion resistance with excellent workability through a special chemical film. It does not use any substances listed in the RoHS Directive, including hexavalent chromium, trivalent chromium, lead, cadmium, or mercury. It also complies with REACH regulations. Due to the uniform thin film without paint accumulation on the bit and screw sections, the driving and tightening torque is stable. 【Features】 ■ No paint accumulation ■ Environmentally friendly ■ Thin film and high corrosion resistance ■ Tough film structure ■ Low-temperature processing ■ Reduced electrolysis *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"DISGO LUNA" is a high corrosion-resistant surface treatment technology that connects molten zinc plating and anti-corrosion paint film with a special chemical film. It maintains the aesthetic of the product over the long term and also improves gas resistance. The high-performance anti-corrosion paint film suppresses the intrusion of external corrosion factors while effectively controlling the sacrificial corrosion effect of the molten zinc plating film. To ensure a strong adhesion between the films, a special chemical film was used. Compared to standard molten zinc plating, the LUNA treatment significantly contributes to corrosion resistance and aesthetic maintenance, possessing performance equal to or greater than HDZ55. 【Features】 ■ High corrosion resistance: Synergistic effect of the anti-corrosion ability of the composite film of metallic zinc layer and high corrosion-resistant coating. ■ Improved gas resistance: Further enhancement of the inherent chemical resistance and sulfur gas resistance of molten zinc plating. ■ Weather resistance (discoloration prevention): Effective in maintaining aesthetics over a long period. ■ Damage resistance: Maintains corrosion resistance through edge coverage and thick film. ■ Reduces electrolysis. *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"Drall" is a zinc-rich paint that can be applied in a single coat at room temperature. By flaking the main components, zinc and aluminum, it achieves high rust resistance with a thin film (30μm) in a single coat. This improves work efficiency and enables versatility. Being a one-component type, there are no restrictions on usable time, and there is minimal sedimentation of metal components, making the stirring process at the start of work easy. Additionally, the low viscosity of the paint ensures good applicability. With a usage amount of 200-250g/m² for a single coat, it contributes to reduced painting costs and shorter work times. 【Features】 ■ Excellent corrosion resistance due to the electrochemical properties of metals (sacrificial corrosion protection of zinc) ■ The inclusion of aluminum triggers a chemical reaction that forms a passive film, suppressing the oxidation of zinc ■ Fast-drying at room temperature, becoming touch-dry in about an hour ■ Completely chrome-free ■ Compliant with RoHS *For more details, please download the PDF or feel free to contact us.

• Screw
• paint
• Rust Inhibitor

"DISGO LANEW" is a rust prevention treatment technology that excels in edge coverage, utilizing a high hardness zinc metal layer and the advantages of our long-developed DISGO processing technology, resulting in high corrosion resistance and excellent workability. The synergistic effect of the rust prevention capability provided by the composite film of the zinc metal layer and high corrosion-resistant coating demonstrates high corrosion resistance with a thin film. Since the processing temperature is below 200°C, it does not affect the physical properties of the product. Paint accumulation in areas such as the cross holes for tapping is reduced, resulting in a sharp finish. The availability of five color variations enhances work efficiency by preventing misuse. 【Features】 - Environmentally friendly: No use of any substances listed in the RoHS Directive, compliant with REACH regulations - Thin film, high corrosion resistance - Damage resistance: Improved corrosion resistance due to the edge coverage of electro-galvanized coating - Low-temperature processing: Can be processed at temperatures below 200°C - Five color variations *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"DISGO (Low Temperature Type)" is a treatment specialized for rust prevention of steel products that are prone to property changes at processing temperatures. The DISGO treatment is a chromium-free, high corrosion-resistant surface treatment technology developed for steel products where delayed fracture due to hydrogen embrittlement from the electro-galvanizing process would be problematic. It is formed in two layers: a base coat containing zinc aluminum and a top coat primarily composed of aluminum and organic resin. With a processing temperature of 200°C, it falls into the lower category of baking treatments and is suitable for rust prevention of steel materials that have issues such as spring steel for seismic resistance and annealing problems. 【Features】 ■ Low temperature treatment (processing temperature 200°C) ■ High corrosion resistance: capable of 1000 hours in salt spray testing and 100 cycles in composite cycle testing ■ Environmentally friendly: does not use any of the six substances regulated by the RoHS directive, compliant with REACH regulations ■ Control of friction coefficient is possible: available in three types - low, standard, and high *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"RUSPERT ZERO・TOP" is a transparent topcoat that combines two features: "barrier properties" that block the intrusion of corrosive factors, and "scratch resistance" that reduces rusting from scratches caused by transportation and construction. It has excellent adhesion and is a thin film baked layer of an organic-inorganic hybrid type, capable of suppressing rust caused by external factors and stabilizing rust prevention effects. Please feel free to contact us when you need assistance. 【Features】 ■ Prevents the intrusion of corrosive factors from scratches due to the suppressive effect of the Zero-Top film ■ Excellent adhesion with an organic-inorganic hybrid type *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"DISGO" is a chrome-free, high corrosion-resistant surface treatment technology developed for steel products where delayed fracture due to hydrogen embrittlement from the electro-galvanizing process is a concern. It consists of a two-layer system formed by a base coat containing zinc aluminum and a top coat primarily made of aluminum and organic resin. The treatment can be broadly categorized into two types: low-temperature type and heavy corrosion-resistant type. It is capable of withstanding 2000 hours of salt spray testing and 200 cycles of composite cycle testing (heavy corrosion-resistant type), and it can also be used as a protective coating for stainless steel materials. 【Features】 ■ High corrosion resistance ■ Hydrogen embrittlement treatment, suitable for high carbon steel ■ Environmentally friendly ■ Reduces electro-corrosion ■ Low-temperature treatment (low-temperature type) ■ Control of friction coefficient is possible *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"New RUSPERT" is a water-based high corrosion-resistant alloy coating that employs zinc-nickel alloy plating, demonstrating excellent corrosion resistance without chromium. Retaining the robust and dense composite film structure of the conventional RUSPERT, it has been reborn as an environmentally friendly water-based system. By adopting zinc-nickel alloy plating, a newly developed high-performance sealer, and a water-based coating, it achieves improved and stable corrosion resistance. Treatment using a spray method (1 coat) is also possible depending on the shape of the product. 【Features】 ■ Water-based system: Uses "water" as a solvent, significantly reducing VOC emissions ■ Completely chromium-free: No harmful chromium compounds are used at all ■ Reduces galvanic corrosion: Significantly reduces galvanic corrosion (dissimilar metal contact corrosion) on aluminum and high corrosion-resistant plated steel sheets ■ Color variations: In addition to the basic color of silver, a wide range of color variations is available *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"RUSPERT Non-Chrome" has successfully achieved complete chromium-free processing while maintaining the same corrosion resistance as before, evolving into an environmentally friendly treatment. The conventional chromate treatment has been replaced with a chrome-free special chemical film. By firmly adhering to the top coat, it maintains performance equivalent to that of chromate treatment. It significantly reduces galvanic corrosion (dissimilar metal contact corrosion) on aluminum materials and high corrosion-resistant coated steel sheets. Since the treatment temperature is below 200°C, it does not affect the physical properties of the products. 【Features】 ■ Environmentally friendly: Completely free of the six substances regulated by RoHS, including hexavalent chromium, trivalent chromium, lead, cadmium, and mercury. ■ Also complies with REACH regulations. ■ Reduces galvanic corrosion. ■ Low treatment temperature (below 200°C). ■ Color variations: The basic colors are silver and black, with various options available to match the landscape. *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

We would like to introduce our product, 'RUSPERT Non-Chrome (For Stainless Steel).' By utilizing our unique technology to form a highly sealable coating, we protect stainless steel from various external corrosion factors and other phenomena. In addition to significantly reducing galvanic corrosion (dissimilar metal contact corrosion) on aluminum materials and high corrosion-resistant coated steel sheets, the treatment temperature is within 200°C, which does not affect the physical properties of the products. It is also suitable for spring products. 【Features】 ■ Protective performance ■ Reduction of galvanic corrosion ■ Reduction of galling ■ Environmentally friendly ■ Low-temperature treatment (low-temperature type) ■ Color variations *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"LAFRE" is a unique rust prevention treatment technology based on the concepts of environmental compatibility, thin film, and high corrosion resistance. It features an inorganic coating that contains three types of metals: zinc, tin, and aluminum, providing excellent adhesion and a tough coating rich in corrosion resistance, similar to alloy plating, to protect the substrate. While a two-coat application is standard, additional specifications such as topcoats can be added according to the intended use. Treatment can also be performed using a spray method (one coat) depending on the shape of the product. 【Features】 ■ Environmentally friendly ■ High corrosion resistance ■ Thin film and heat resistance ■ Hydrogen embrittlement treatment, suitable for high carbon steel ■ Coating properties ■ Adhesion of topcoats *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

"CAELAR LB" is a high corrosion-resistant rust prevention treatment technology that achieves corrosion resistance equivalent to or greater than austenitic stainless steel, despite being made of ordinary steel. It features a surface treatment that is strong against scratches that occur during the driving of self-drilling screws and the tightening of bolts. Additionally, it can be applied to austenitic stainless steel, further enhancing the high corrosion resistance of stainless steel. By combining three types of coatings with different functionalities, it significantly improves corrosion resistance. Test results show no red rust formation after 2000 hours in a salt spray test. 【Features】 ■ High anti-corrosion performance ■ Completely chrome-free ■ Reduced hydrogen embrittlement ■ Weather resistance ■ Heat resistance ■ Gas resistance *For more details, please download the PDF or feel free to contact us.

• Screw
• Surface treatment contract service

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.

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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.

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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.*

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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.

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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.

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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