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January 01st, 2025

What is a High-Tech Screw? | Simple Explanation in 3 Minutes: High-tech screws are a general term for screws with special functions and high performance, designed to meet high demands that conventional screws cannot handle. These screws are used in many fields to achieve product miniaturization, weight reduction, increased strength, and improved durability. High-tech screws are also commonly referred to as “high-performance screws” or “special screws.” These screws are designed to meet specific applications and environmental conditions. The primary use of high-tech screws is for reinforcing and connecting parts. For example, they are widely used for repairing everyday household items. Additionally, they have a unique tip shape that makes tapping easier. (Even without a pre-made internal thread, the screw itself can create threads in the material and secure it.) There are many types of high-tech screws, including: ・Sunlock ・Evatite ・Deltite ・Dia Screw ・Tap Type ・Deltite ・SP Seated Screw ・TP Screw ・FT Screw ・Nonsert (+) Pan Head ・Lip Screw (+) Pan Head etc. High-tech screws are mostly made of stainless steel, but there are significant differences in their dimensions and head shapes. High-tech screws are mainly used for fastening materials such as wood, thin steel sheets, aluminum alloy plates, and plastic sheets. They are well-suited for thinner materials, allowing for a wide range of applications. Since they eliminate the need for internal thread processing or insert nuts, they are often used to reduce fastening costs and improve work efficiency. If you have any questions about samples or materials, please reply to this email or consult with our sales representatives! At Ohta Vietnam, we offer services ranging from the sale of standard products such as screws and bolts to machining, inspection, assembly, and packaging, covering the broader scope of manufacturing. For a list of our equipment, please click here. As the “handyman” of Asia’s manufacturing industry, feel free to consult Ohta Vietnam for any challenges you face! URL: https://ohtavn.com/contact/

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December 25th, 2024

What is a Tapping Screw? | Simple Explanation in 3 Minutes: A tapping screw is a type of screw that can create its own threads while being fastened into a pre-drilled hole. In English, it is called a “Tapping Screw” and is commonly used to secure thin materials such as metal, plastic, and wood. It is widely utilized in various fields, including construction, machinery, and household appliances. A tapping screw is a screw that can form threads in a material as it is driven in. (Even without a pre-threaded hole, the screw itself can create threads and secure the material.) The main difference between a tapping screw and a drill screw is that a tapping screw requires a pre-drilled hole (made with a drill or bit). In a standard process, a pre-drilled hole would typically need tapping to create internal threads, but a tapping screw can create threads in the material as it is driven in. The main head types of tapping screws include pan head, flat head, and truss head. Tapping screws are mainly made from iron or stainless steel. When a tapping screw is driven into a material, resistance occurs, which reduces the fastening force, leading to lower axial force. Compared to machine screws, tapping screws generally have lower axial force. Tapping screws are primarily used to fasten materials such as wood, thin steel plates, aluminum alloy plates, and plastic sheets. Since they are suitable for thin materials, they offer a wide range of applications. By eliminating the need for pre-threaded holes or insert nuts, they help reduce fastening costs and improve work efficiency. Tapping screws have six different thread types: ・Type 1A The coarsest pitch among tapping screws. Used for wood, hardboard, thin steel plates (1.2mm or less), asbestos, etc. ・Type 2B0 The first 2 to 2.5 threads from the tip are tapered. Used for thin steel plates (5mm or less), plastic, hard rubber, etc. ・Type 2B1 A modified version of Type 2 tapping screws with the first quarter of the tip removed. Used for thin steel plates (5mm or less), plastic, non-metal materials, hard rubber, etc. ・Type 3C0 The first 2.5 to 3 threads from the tip are tapered. Can be used for structural steel, cast iron, and non-ferrous metals, suitable for thicker materials compared to Type 2 screws. ・Type 3C1 A modified version of Type 3 tapping screws with the first quarter of the tip removed. Used for structural steel, cast iron, and non-ferrous metals. ・Type ...

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December 20th, 2024

What is a Drill Screw?｜Simple Explanation in 3 Minutes: A drill screw is a special type of screw with a drill-shaped tip that allows it to be fastened directly into materials without the need for pre-drilling holes. It is commonly used in construction and industrial fields, making it easy and efficient to secure materials such as steel plates, aluminum sheets, and wood. A drill screw has a tip that is processed like a cutting blade, allowing it to fasten into metal without pre-drilling holes by using power tools such as an impact driver. Since it can be directly screwed into metal or wood without prior drilling, it significantly reduces labor time. Its primary application is in construction. For example, it is useful for fastening steel plates together or securing wood and boards to steel plates. As mentioned above, it helps reduce effort and speeds up the construction process, making it highly efficient. Drill screws are mainly made from carbon steel and stainless steel. They provide strong fastening capabilities and can maintain high strength over long periods. The pointed tip of a drill screw allows it to be screwed in directly without pre-drilling holes. This makes assembly work easier and faster, significantly reducing work time. Additionally, drill screws provide a strong and secure connection. One common application is in fastening factory exterior walls and roofs. In such cases, rubber or sponge-like washers are often integrated into the screw design. These washers prevent water from leaking through the holes made by the screw, ensuring a secure and waterproof installation. As a multifunctional screw, drill screws are widely used in construction and metalworking industries. In the construction industry, they are used for exterior walls, roofs, floors, window frames, and signboard installations. In the metalworking industry, they are used for sheet metal work and metal product assembly. Drill screws are particularly suitable for outdoor applications and areas exposed to rain and wind. 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 15th, 2024

What is a Micro Screw?｜Simple Explanation in 3 Minutes: Micro screws are extremely small screws used in the assembly of precision equipment and compact devices. Generally, they refer to screws with a diameter of less than 1mm to a few millimeters, and they play an active role in situations requiring particularly fine fastening. As the name suggests, micro screws are extremely small screws. They are finer than regular screws, with particularly smaller heads compared to other screws. They are essential for precise assembly and repair work. However, due to their small size, specific tools and techniques may be required in certain situations. Micro screws are made from various materials, including iron, brass, and stainless steel. Since different materials are used depending on the application, it is necessary to consult with an expert before selecting the appropriate screw for a product. Micro screws are responsible for joining and securing small components. They play a crucial role, especially in the assembly of precision equipment and electronic devices. Common examples include cameras and eyeglasses. In recent years, as machines have become smaller, the applications for micro screws have expanded, increasing the demand for screws even smaller than size 0, known as size 00. Size 0 refers to the driver size for the screw head. There are different types of micro screws, such as size 0 type 1 and size 0 type 3. These classifications indicate the size and thickness of the screw head—the larger the number, the larger and thicker the screw head. Additionally, there are two types of screw heads: “pan head” and “flat head.” Pan Head: A rounded screw head on the top surface. Flat Head: A screw head with a flat top surface. 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 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 ...