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December 05th, 2024

What are Embedded Screws?｜Simple Explanation in 3 Minutes: Embedded screws (or embedded bolts) are screws that are integrated with washers. This type of screw is designed to improve work efficiency by eliminating the need to separately prepare or install washers during fastening. Embedded screws are small screws or bolts pre-assembled with washers. *Washers are used to prevent screws from loosening and to avoid sinking of the seating surface due to tightening pressure. Since washers are assembled before threading the screw, there is no need to insert the washer during tightening, preventing washer loss or installation omission and improving work efficiency. Additionally, the inner diameter of the assembled washer is smaller than the screw thread diameter (outer diameter), ensuring that the washer does not fall off after threading. There are two main manufacturing methods for screws: “cutting,” which creates threads by machining, and “rolling,” which forms threads by applying pressure. In this process, simply attaching a washer is not enough, and specialized machines for assembling washers are required. The primary purpose of embedded screws is similar to the use of washers: preventing loosening and avoiding sinking of the seating surface. A significant feature is the added improvement in work efficiency. For instance, using flat washers increases the contact surface area compared to fastening with screws alone. This results in greater friction, providing a stronger anti-loosening effect. There are various types of embedded screws to match different kinds of washers (W=Washer). This section is omitted, but there are examples such as P=1, P=2, etc. A single washer assembly is called a single SEMS, and a double washer assembly is called a double SEMS. Therefore, when selecting embedded screws, it is necessary to choose a type based on the purpose and specify screw diameter, shaft length, etc. For inquiries regarding samples or materials, please respond to this email or contact our sales representative! At Ohta Vietnam, we not only provide ready-made products such as screws and bolts, but also support activities in the manufacturing field such as cutting, inspection, assembly, packaging… Our equipment list is here As a “specialized support” for the manufacturing industry in Asia. If you have any related questions, feel free to contact Ohta Vietnam for detailed support! URL: https://ohtavn.com/en/contact/

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December 01st, 2024

What is a small screw?｜A simple 3-minutes explanation: Small screws are screws with relatively small sizes used to fasten machinery and components. Generally, they refer to screws with diameters ranging from 1mm to 12mm, which are widely used in precision instruments and household appliances. Small screws consist of a threaded part (male thread) and a head, serving the purpose of fastening materials. Small screws are used in various hidden areas of equipment, devices, and everyday items, regardless of scale. As the name suggests, small screws generally have thread diameters of up to φ12mm and are used for fastening in precision equipment. Depending on the required application, differences in head shape, thread standards, materials, and surface treatments are utilized. The primary material is iron, but depending on the application, standardized products made from stainless steel, brass, titanium, aluminum, and resin are also available. For small screws, manufacturing is primarily done through cold forging and thread rolling, though some are also produced using machining processes. Small screws play a crucial role in assembling delicate parts and machines, often used in areas not visible to the general public. They are essential components in products requiring precise movements or design, such as fixing circuit boards in electronic devices, assembling medical equipment, and other precision instruments. Depending on differences in head shapes or special functions, there are various types of small screws, such as pan, flat, truss, tamper-proof, and fall-prevention screws. Some representative examples include: – Pan Head Screws – Flat Head Screws – Oval Flat Head Screws – Truss Screws – Bind Screws – Upset Screws – Combination Screws (SEMS Screws) – Fall-Prevention Screws – Air Vent Bolts/Screws – Tamper-Proof Screws For inquiries regarding samples or materials, please respond to this email or contact our sales representative! At Ohta Vietnam, we not only provide ready-made products such as screws and bolts, but also support activities in the manufacturing field such as cutting, inspection, assembly, packaging… Our equipment list is here As a “specialized support” for the manufacturing industry in Asia. If you have any related questions, feel free to contact Ohta Vietnam for detailed support! URL: https://ohtavn.com/en/contact/

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November 25th, 2024

What are Pro Tools? | Simple Explanation in 3 Minutes: “Pro Tools” in manufacturing refers to tools used by professionals and technicians involved in the manufacturing process, quality control, and other related tasks. These include consumables, tools, and supplies required in factories, construction sites, warehouses, and offices. These tools contribute to streamlining manufacturing operations, improving productivity, and ensuring quality. Pro tools are indispensable in the manufacturing industry, helping companies maintain competitiveness in their manufacturing processes and enhancing product quality and efficiency. Types of pro tools include machine tools, protective equipment, repair materials, and packaging materials used by individuals involved in manufacturing. These can be categorized as follows: *Details of various pro tools: https://ohtavn.com/en/business-cat/pro-tools/ ・Cutting Tools Turning and milling tools Drilling tools Threading tools Chamfering tools ・Production Processing Supplies Tooling and jigs Magnet supplies Measuring tools Measurement equipment Fluid fittings and tubes Pneumatic and hydraulic equipment Industrial filters Small machining machines and heaters Drive equipment and bearings Machine parts Architectural hardware and factory partitions Casters Screws, bolts, and nuts Fastening tools Soldering and anti-static supplies Electrical and electronic components Electrical installation components Adhesives and repair materials Chemical products ・Work Tools Wrenches, spanners, and pullers Screwdrivers and hex keys Pliers and nippers Scissors, cutters, and sheet metal tools Hammers, stamps, and punches Clamps and vices Non-sparking and insulated tools Automotive maintenance tools and grease guns Electrical installation tools Plumbing and HVAC tools Toolboxes and tool bags Power tools and hydraulic tools Driver bits Pneumatic tools Cutting tools Grinding and polishing tools ・Construction Tools Pipework equipment Pumps Generators and compressors Civil engineering and carpentry tools Surveying equipment Painting and interior finishing tools Welding supplies Cord reels and extension cords Work lights and lighting equipment Ladders and step stools ・Office and Facility Supplies Storage sheds and exterior supplies Office furniture Office automation and stationery ・Environmental and Safety Supplies Protective equipment Safety supplies and signs Disaster prevention and security supplies Temperature control supplies Environmental improvement equipment Cleaning supplies Hoses and watering supplies Greening supplies Occupational health supplies Tape supplies Packaging and bundling supplies Sheets and ropes ・Logistics and Storage Supplies Storage racks Workbenches Tool wagons Tool cabinets and container racks Transport carts Lifters and hand pallets Conveyors Chain blocks and cranes Lifting clamps and belts Jacks and winches Containers and pallets Storage supplies Bottles and containers As mentioned, pro tools play a significant role in improving the efficiency of manufacturing operations, enhancing productivity, and ensuring quality. However, since manufacturing involves numerous processes, the variety of ...

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November 20th, 2024

What is Precision Cutting Machining? | A Quick 3-Minutes Explanation: Precision machining refers to machining technology used to manufacture parts and products with extremely high accuracy. This technology is used to achieve dimensional tolerances of ±0.001mm or less and smooth surface finishes, which are not attainable with standard machining methods. Precision machining plays a crucial role in fields requiring high accuracy, such as aerospace, medical equipment, automotive, and electronics. Typical methods include cutting machining (using lathes and milling machines), grinding machining (finished with grinding wheels), and electrical discharge machining (using electric sparks). In recent years, digital technologies such as CNC (computer numerical control) and 3D printing have been applied to precision machining. The defining feature of precision machining is its ability to accurately reproduce shapes and dimensions as designed, enabling improved assembly precision and product performance. Achieving high-precision machining requires advanced machinery, appropriate material selection, and high technical expertise. Precision machining involves manufacturing technology that operates within extremely fine dimensions and tolerances. There are two main categories: “precision machining” and “ultra-precision machining,” classified based on the “fineness” of the process. ・Precision machining: Achieves micrometer-scale precision, allowing for machining accuracy up to 1/1000 mm. ・Ultra-precision machining: Achieves nanometer-scale precision, allowing for machining accuracy up to 1/1000 μm. The applications of ultra-precision machining are limited, primarily in the semiconductor and optical fields. For general industrial products, precision machining is more commonly used. Furthermore, precision machining requires advanced technologies, production processes, and quality management. It is also necessary to consider the material’s properties and its resistance to environmental changes after production. Precision machining is essential in various fields such as aerospace, medical equipment, electronics, and automotive industries. Below are typical scenarios where precision machining is required: ◆Electronics Manufacturing Electronics have become increasingly miniaturized in recent years, with intricate components and circuits. Components used in essential devices such as smartphones, tablets, and wearable devices require precision machining to maintain high reliability and performance. ◆Automotive Industry Many automotive parts are manufactured using precision machining. Components such as engine parts, brake systems, airbags, and fuel injection systems require high precision in manufacturing and assembly to ensure safety, fuel efficiency, and overall performance. ◆Mechanical Engineering In mechanical engineering, high-precision operation and manufacturing of intricate components are essential. Precision design and machining are critical for maximizing the performance of machinery such as machine tools, robots, and industrial machines. High-precision machining technology is also indispensable for developing precision measurement devices and testing equipment used in research institutions and laboratories. ...

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November 01st, 2024

What is FRP Resin? A Simple Guide to Its Characteristics and Applications for beginners: FRP stands for Fiber-Reinforced Plastics, which is a collective term for plastics 【P】 that are reinforced 【R】 with fiber 【F】. It is made by adding strong fibers like glass fiber to lightweight and flexible plastic. By adding this “strong fiber,” it compensates for the weakness of plastic and becomes a durable, long-lasting material. Although plastic itself is light and easy to use, it lacks the strength needed for use in parts of buildings and vehicles. By mixing in fibers such as glass fiber, the plastic is reinforced, creating FRP. Because FRP is light, inexpensive, and long-lasting, it is widely used in everyday applications such as airplanes, cars, and home equipment. FRP (Fiber Reinforced Plastic) is a composite material that combines a resin base with reinforcing fibers, offering greater strength and durability than standard plastic. Due to this structure, it is widely used across various industries. With its lightweight and high-strength properties, along with its durability and corrosion resistance, FRP plays a significant role in fields such as automotive, construction, aerospace, and marine. FRP is composed of a resin component known as the matrix and reinforcing fibers like glass or carbon fibers. The matrix protects the fibers from external impacts and chemical influences and also helps in transferring forces between the fibers. The reinforcing fibers, on the other hand, mainly improve the tensile strength and elastic modulus, thereby enhancing the strength of the composite as a whole. The interplay of these two components makes FRP a material with high durability and light weight. The manufacturing process of FRP proceeds as follows: Fiber Preparation The fibers, which determine the strength of FRP, include glass fiber, carbon fiber, and aramid fiber. These fibers are shaped into yarn or sheets, forming the framework of the product. Glass fiber, with its high electrical insulation and relatively low cost, is widely used in electrical equipment and construction. Carbon fiber, possessing exceptionally high tensile strength and lightweight properties, is highly valued in the aerospace and automotive industries. Resin Impregnation The prepared fibers are impregnated with resin (such as epoxy or vinyl ester). The resin, acting as the matrix, covers the fibers and evenly distributes forces applied to the fibers. Additionally, the resin protects the fibers and enhances durability. Depending on the application, resins with suitable heat resistance and corrosion resistance are selected. Epoxy resin, known for its strength, heat resistance, and chemical resistance, is often used ...

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October 15th, 2024

The Ultimate Guide to Choosing and Using Rivets for Various Applications: Rivets are essential fasteners for firmly joining various materials. They are used in a wide range of fields, from aircraft and automobiles to everyday furniture and electronic devices. Choosing and using the right type of rivet can greatly affect the quality and durability of a product, so it’s important to select a rivet suited to the intended application. This article explains the different types of common rivets, their unique characteristics, how to use them, and tips for selection. It serves as a guide for those using rivets for the first time or struggling with selection, so please refer to it. Rivets are mechanical fasteners used to firmly join two or more materials. The basic structure of a rivet consists of a head and a shank, which is inserted into a pre-drilled hole and then plastically deformed at the end to secure the parts. This process is called “setting”, and it is done with a hammer or special tool. As mentioned above, rivets secure two or more materials by inserting and setting them from one side, fixing the materials without using nuts or bolts. They are widely used in industrial fields such as automotive, aerospace, and construction. Compared to other fasteners, rivets provide strong tensile and shear resistance and allow stable fastening over the long term. Rivets are particularly effective in narrow spaces or locations that only allow work from one side, where nuts and bolts may not be suitable. They are frequently used in areas requiring durability and safety, such as car body parts and aircraft exterior panels. Additionally, rivets play an important role in various fields such as furniture, home appliances, and even clothing and bags. Different types of rivets are selected depending on the environment and application, showing their effects in the right places. Advantages Strong Holding Power: Rivets have strong tensile and shear strength and are used where secure fastening is required. They are especially suitable for situations where long-term stable joints are needed. Single-Sided Operation: Rivets allow work from only one side, making them easy to use in tight spaces or areas with limited access. Blind rivets, in particular, are specialized for single-sided work and are conveniently used in many scenarios. Cost-Effective: Rivets provide high durability at a low cost. They come in various sizes and materials, allowing the selection of the optimal rivet for the application. Disadvantages Difficulty in Removal: Once set, rivets require destruction ...

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October 01st, 2024

The development and history of screws: from the Industrial Revolution to the present: Screws are essential components used in various fields, from our everyday lives to advanced industries. Their origin traces back to ancient Greece, and with the Industrial Revolution, mass production became possible, establishing screws as a foundation for industrial products. Although screws may appear as simple fasteners, their technology has evolved over time, and they are now used in highly advanced fields such as precision instruments and aerospace industries. In this article, we trace the history and evolution of screws, exploring how screws have supported the foundations of industry and played a crucial role in future technological innovations. From ancient inventions to the Industrial Revolution and the modern smart screw, let’s uncover the untold story of how screws have contributed to technological advancements. The history of screws dates back to the 4th century BCE. During this period, the Greek mathematician and inventor Archimedes invented a water-raising device known as the “Archimedean Screw,” marking one of the earliest records of screw technology. This device had a large helical screw inside a cylindrical machine, used to efficiently lift water. It was widely used in irrigation and mine drainage systems, bringing innovation to agriculture and civil engineering of the time. This invention established the basic principle of converting rotational motion to linear movement, greatly contributing to the later development of industrial technology. Additionally, ancient scholars such as Eustathius pointed out that Archytas and Apollonius of Perga may have also invented the principles of screws, highlighting the importance of screw technology at the time. Screws were more than tools for fastening; they were innovative technology that contributed to the mechanical engineering and societal infrastructure of the time. The Archimedean Screw’s design was adopted even in later times, passed down as a technology still in use today. This marked the first crucial step in screw history, laying the groundwork for future technological advancements. Screw technology established its foundation during ancient Greece, yet continued to advance through the Middle Ages. However, a major turning point in innovation arrived during the Renaissance. This period saw rapid advancements in arts and science, particularly in Italy, where many engineers and inventors emerged. Among them, the renowned genius Leonardo da Vinci made notable contributions by further expanding the applications of screws. Da Vinci left sketches of compressors and screw-cutting machines using screws, as well as taps and dies, which later became indispensable tools in manufacturing industrial products. In particular, the invention ...

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September 13th, 2024

Introducing tapes that can adhere to oil surfaces and functional adhesive tapes!: This time, we introduce the ‘Tape that can be applied to oily surfaces‘ for workplaces dealing with oil. This new product, launched by Rinrei Tape Co., Ltd. in August 2024, works with both plant and mineral oils, can be torn by hand, and can be written on—a magical tape. In manufacturing, oil is used on various parts and surfaces, but even in such environments, this special tape can adhere without peeling off when applied properly. Additionally, we introduce the clear anti-slip tape from the same manufacturer! This adhesive tape features a special adhesive that absorbs oil. It utilizes a strong adhesive design and a thick laminated high-strength substrate, eliminating the need for large-scale degreasing operations. In locations where oil is used, it is essential for tasks like marking lines or writing down NG spots on products coated with anti-rust oil, as well as for memo-taking. It is sure to become indispensable for production lines across various manufacturers. Can be applied directly to oily surfaces Exhibits strong adhesive power on surfaces with oil (compatible with both mineral and plant oils). No need for extensive degreasing work. *However, it is recommended to clean the surface beforehand if the floor is dirty. Easy to handle Tears by hand, with no release paper, improving work efficiency and reducing waste. Versatile for different scenarios Available in two colors (white and yellow) to meet various needs, such as fixing metal parts or using as line tape. Typically, adhesive tapes cannot be used on oily surfaces without thorough degreasing. Simply wiping oil with a cloth is not enough, and only after using a dedicated cleaner is the surface degreased. Additionally, there are cases where degreasing is prohibited, such as on metal processing products, resulting in many situations where adhesive tape cannot be used. The “Oil Surface Tape #6001L” released this time is a functional tape that can be used directly on oily surfaces without the need for degreasing. The adhesive used in this product is a special one that absorbs oil, and its adhesive strength develops within seconds after application. This product is also designed to be hand-torn straight, without the need for scissors or a cutter. Moreover, it is release-paper-free, ensuring no additional waste in the workplace. By using this product, it greatly contributes to improving work efficiency for those dealing with oily surfaces. ＜Detailed Catalog＞ *Only Japanese Ver. Click here for the catalog >> ＜Product ...

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September 06th, 2024

Five points to remember when selecting a machine screw and the characteristics of each type: Small screws are essential components used in a wide range of applications, from industrial to household use. Although small in appearance, their functionality and performance vary greatly depending on their use and material. This article explains the types and selection process of small screws, and introduces five tips to avoid mistakes. Choose the optimal small screw for your application and prevent problems in advance. Small screws are indispensable components in modern industrial products and everyday devices. Since they are not limited to a specific use, they are employed in various fields, such as automobiles, home appliances, and electronic devices, playing a crucial role in securely fixing parts together. The selection of small screws, depending on their shape and material, significantly influences the reliability and safety of machinery and devices. Choosing the appropriate small screws can greatly improve the durability and performance of the overall product. A small screw is a type of screw that is specialized for fixing small and precise parts. Generally, screws with diameters ranging from a few millimeters to about 10 millimeters are considered “small screws,” and their design allows them to be used in various tasks. Small screws, especially due to their small diameter, are widely used in precision machinery and electronic devices, where they are highly valued for joining delicate parts. The biggest feature of small screws is their diverse shapes and materials. For example, stainless steel small screws are resistant to corrosion and can be used in humid environments without rusting for a long time. Brass small screws, on the other hand, have high electrical conductivity and are often used in connecting electronic circuits. Furthermore, different shapes are used depending on the application, with designs such as round head screws or flat head screws, making small screws highly versatile items that are essential for assembling delicate components. Electronic Devices: Computers, smartphones, and cameras are composed of numerous small parts that are securely fastened with small screws. Properly fastened screws ensure the durability and stable operation of the device. For example, screws made of materials resistant to vibration and shock are often used to support precise circuit boards. Precision Machinery: In precision machinery such as watches, medical devices, and aerospace components, small screws are essential for securely fixing minute parts, ensuring accurate operation. Home Appliances: Small screws are also used in household appliances such as air conditioners, refrigerators, and washing machines, where they play a ...

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September 01st, 2024

Choosing the right tool for the intended purpose is important! How to handle screws and bolts: Screws and bolts are crucial components that greatly affect the safety and durability of products. By choosing the right tools and mastering proper handling techniques, you can improve work efficiency and quality. Don’t forget to maintain your tools regularly to ensure they are in optimal condition, as this is the first step towards improving product quality. Screws and bolts may look similar, but they are different components. Generally, screws are used alone to fasten materials, while bolts are used together with nuts. Screws can be directly fixed into materials like wood, metal, or plastic, whereas bolts are often used with nuts and washers to secure machine parts or construction materials. Both screws and bolts consist of the “head,” “shaft,” and “thread.” The head is the part turned by a tool, and the shaft affects the length and strength. The pitch (spacing) of the threads determines the holding power, with finer threads offering higher fastening strength. Machine Screws: Used in home appliances and precision instruments. Tapping Screws: Can be screwed directly into wood or thin metal sheets, making them useful for furniture assembly and construction sites. Hex Bolts: Used for securing machinery and structures that require high clamping strength. ▼ Basic Knowledge of Screws and Bolts URL: https://ohtavn.com/en/about-dealings/basic-knowledge/ ▼ Thorough Explanation of Screw Types! How to Choose the Best for Your Manufacturing Site URL: https://ohtavn.com/en/media/screw-type/ Selecting the right tools for handling screws and bolts is essential for ensuring proper fastening. Here, we explain the main types of tools and their features. Driver Drivers are one of the most basic tools and are used to tighten or loosen screws with Phillips (+) or slotted (-) heads. Phillips Driver: Designed for Phillips screws, widely used in households and DIY projects. Selecting the right size driver is essential for securely turning screws. Slotted Driver: Used for slotted screws or certain specialized screws, often found in older products or construction sites. Hex Wrench (Allen Key) A hex wrench is used for tightening hex bolts or socket head bolts (commonly known as cap bolts). Hex wrenches are especially useful in tight spaces or for accessing hard-to-reach areas inside machinery. Additionally, they allow for applying significant torque, making them ideal for secure fastening. Torque Wrench A torque wrench is a tool used to tighten screws and bolts to a specified torque. In the assembly of precision instruments or mechanical parts, exact torque is required, making this tool ...