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February 20th, 2025

Three recommended pumps from Japan Oil Pump, a Japanese manufacturer of all types of oil transfer!: A must-see for manufacturers and other companies with oil-related equipment! Nippon Oil Pump, a manufacturer of liquid transport products with over 100 years of history, introduces three recommended products that can be obtained and maintained in Vietnam! ◆GCI (NOP FILTER PUMP) A space-saving coolant pump with filtration function This one unit can handle all your supply pumps, cyclone filters, line filters, and clean tanks! We have models available for a variety of capacities, so we will suggest a product that best suits your facility! Manufacturer website here >> (There is a YouTube video) ◆Trochoid/Trochoid® Pump Active in a wide range of fields, from machine tools to ships Trochoid® pumps are pumps that take in oil between external and internal gears and transfer it by rotating the gears. They have low wear, low noise and a long life. They are used in a wide range of fields, including transferring oil for cooling and lubrication in machine tools, transferring fuel in ships, factories and agricultural greenhouses, engine oil changers at gas stations, changing tempura oil in the food industry, and as a pump that transfers lubricating oil to the gears of wind power generation. [Applications] Construction machinery, industrial machinery, machine tools, food machinery, auto equipment, leisure facilities, environmental equipment, printing machines, ships, etc. For more detailed product information, please visit the Nippon Oil Pump website. Manufacturer website: >> ◆HPM/High pressure coolant pump A new high-pressure coolant pump. Please consider introducing this when you need even higher pressure! For more information, please refer to the manufacturer’s special flyer (English version) below. Click here for the product catalogue >> If there is a product you are interested in, please feel free to contact us. We will set up a meeting with a representative from the manufacturer. 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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February 15th, 2025

What are Sheet Metal Screws? | Simple Explanation in 3 Minutes: Sheet Metal Screws are screws designed to fasten thin metal sheets (sheet metal) and are primarily used in automobiles, construction, home appliances, and more. These screws create and secure holes by being directly screwed into the sheet metal. In some cases, pilot holes may be drilled, but self-tapping types that do not require a pilot hole are generally more common. Sheet metal screws are designed with a sharp tip and deep threads, allowing them to easily penetrate thin metal sheets. To enhance durability and rust resistance, they are often made of zinc-plated or stainless steel materials. Additionally, they are designed to resist loosening, making them highly resistant to vibrations and impacts. Common screw heads include flat head and truss head, selected based on the application. Self-tapping function eliminates the need for pilot holes. Anti-rust processing (such as zinc plating and stainless steel materials) improves durability. Provides strong fastening power resistant to vibrations and impacts. The primary role of sheet metal screws is to securely fasten thin metal sheets to each other or to other materials such as plastic or wood. With their self-tapping ability, they create holes while fastening, simplifying the assembly process. This significantly improves work efficiency. Sheet metal screws not only firmly secure metal sheets but also streamline the assembly process by performing drilling and fastening simultaneously. They also provide high durability in environments subject to frequent vibrations and impacts, ensuring stability after assembly. Furthermore, when pilot holes are unnecessary, they contribute to reducing assembly costs. Self-tapping function eliminates the need for pilot holes. Anti-rust processing (such as zinc plating and stainless steel materials) improves durability. Provides strong fastening power resistant to vibrations and impacts. Sheet metal screws come in various types, including tapping screws and self-drilling screws (drill screws), chosen based on the application and environment. They are available in different shapes such as flat head, truss head, and rust-resistant variants. – Tapping Screws Directly screwed into sheet metal. – Self-Drilling Screws (Drill Screws) Drill-shaped tip eliminates the need for a pilot hole. – Flat Head Screws Ideal for applications requiring a flush finish. – Truss Head Screws Ensures stability with a broad contact surface. – Rust-Resistant Screws Processed for use in outdoor or high-humidity environments. 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 ...

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February 05th, 2025

What is a Nut? | Simple Explanation in 3 Minutes: A nut is a component used in combination with screws (such as bolts and stud bolts) to secure materials. It typically has a hexagonal shape with internal threading (female thread) and, when used with bolts or screws, ensures a firm fastening of components. A nut is a component with internal threading (female thread) that is used together with bolts and stud bolts. The most common shape is hexagonal, designed for easy tightening and loosening with tools. Nuts are made from materials such as iron, stainless steel, aluminum, and brass, with additional plating or coatings to enhance durability and corrosion resistance. Some nuts are specially designed to prevent loosening or to improve aesthetics for specific applications. Nuts are used in various fields, such as construction for securing beams and columns, machinery for fastening parts, and automobiles or aircraft where resistance to vibration and pressure is crucial. They are also widely used in furniture assembly and DIY projects. Depending on the application, nuts come in different sizes and shapes for securing bolts in public infrastructure and assembling precision instruments. The primary function of a nut is to work with bolts and screws to securely fasten materials. By interlocking the male thread of the bolt with the female thread of the nut, it creates a strong fastening that withstands vibrations and external forces. Using a nut allows for repeated tightening and loosening of fastening points, making assembly and maintenance easier. In many cases, spring washers or lock nuts are used alongside nuts to prevent loosening. There are various types of nuts. The most common is the hex nut, which is used in a wide range of applications. Lock nuts help prevent loosening due to vibrations or shocks, while flange nuts distribute pressure over a wider contact area. Cap nuts, which have a closed top, are chosen for their appearance and safety. Additionally, there are wing nuts that can be tightened by hand, slotted nuts for specialized applications, and tamper-resistant nuts designed for security purposes. Each type of nut has unique characteristics suited to different environments, ensuring safety and efficiency in fastening. ・Hex Nut A standard nut widely used in mechanical and construction applications. ・Lock Nut A specialized nut designed to prevent loosening due to vibrations (e.g., nylon insert nuts). ・Flange Nut A nut with a flange (disc-shaped protrusion) at one end, providing a wider contact surface. ・Cap Nut A nut with a closed ...

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February 03rd, 2025

What is a Thumb Screw? | Simple Explanation in 3 Minutes: A thumb screw is a type of screw designed to be easily tightened or loosened by hand without the use of tools. Its head is shaped for easy gripping, allowing it to be turned with minimal effort. As a result, it is commonly used in situations where frequent adjustments, fastening, or removal of machine components are required. A thumb screw is a type of screw with a head specifically designed for easy tightening and loosening by hand. Generally, it can be operated by simply turning it with fingers without the need for tools, making it a highly convenient screw for manual adjustments. Common types of thumb screws include wing nuts and wing bolts. Below are the main features of thumb screws: Operable by hand: As the name suggests, thumb screws can be grasped and operated using fingers. They do not require tools, allowing users to tighten or loosen them manually. Head shape: The head of a thumb screw is typically large and flat, making it easy to grip securely. This allows for effortless application of force and simple operation. Variety of sizes and shapes: Thumb screws are available in various sizes, thread types, and head shapes. This enables users to select the most suitable option based on specific requirements. Thumb screws are commonly used in lighting fixtures, furniture, office equipment, and signage, especially in locations where screws are frequently attached and removed. As mentioned earlier, thumb screws eliminate the need for wrenches or spanners, enhancing work efficiency and making them widely used in consumer products. Since thumb screws can be operated manually, they are valuable in various scenarios requiring fine adjustments or frequent access. Different shapes, sizes, and materials are available depending on the intended application. Electronic devices: Thumb screws are used as fasteners for opening and closing electronic device cases and covers. They are also utilized in rack-mounted equipment and panel installations. Industrial equipment setup and adjustments: Thumb screws are employed in the setup and adjustment of industrial machinery and manufacturing equipment. They help fine-tune machine operations or align with specific production requirements. Vehicles and automobiles: Thumb screws may be used to secure components in vehicles, such as engine covers, battery covers, and air cleaners in cars and motorcycles. Construction industry: Thumb screws are used in construction projects for equipment adjustments and securing metal panels. If you have any questions about samples or materials, please reply to this email ...

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January 25th, 2025

What is a Washer? | Simple Explanation in 3 Minutes: A washer is a thin, circular or square-shaped metal component placed under the head of a screw, bolt, or nut during fastening. Commonly referred to as a “washer,” it is used to prevent friction between parts, reduce loosening, and distribute pressure. Washers are made in various shapes and materials, selected based on their intended application. Washers are used when fastening components with screws or bolts. Common types include flat washers, which protect the fastening surface from damage, and spring washers, which help prevent loosening of screws and bolts. Washers are primarily used to prevent the loosening of screws. Because washers have a larger surface area than screws or bolts, they help stabilize the contact surface, prevent loosening, and enhance airtightness. One of the main roles of washers is to reduce the pressure applied to components. Since washers distribute the pressure of screws and bolts over a larger surface area, they help prevent dents and damage to materials. This is particularly useful when working with soft materials or small contact areas, as washers improve the stability of connections. There are various types of washers, each suited to different materials and situations. While JIS standards define washer sizes, custom washers with specific outer diameters and thicknesses can also be produced to accommodate different applications. Below are some of the commonly used washer types: ・Flat Washer A flat washer with a simple shape, typically referred to as just a washer. It is available in different materials, including iron and stainless steel. ・Spring Washer A washer with a cut and an uneven shape. The uneven edge grips the material, helping to prevent loosening of screws and bolts. ・Toothed Washer A washer with sharp teeth on its inner or outer edges. The teeth bite into the material, enhancing resistance against loosening. This type is commonly used in automobiles, electrical appliances, and precision machinery. There are many other types of washers, each with unique characteristics. Choosing the right washer for the intended purpose is essential. 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 ...

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January 20th, 2025

What is a Cap Hex Socket Screw? | Simple Explanation in 3 Minutes: A cap screw (cap bolt) is a type of screw with a cylindrical (cap-shaped) head that has a hexagonal socket. It is officially called a “hex socket head bolt” or “hex socket head cap bolt.” Typically, it is tightened and loosened using a hex wrench and is widely used in industrial applications and machinery assembly. Cap screws (hex socket head bolts) and set screws (grub screws) are characterized by their hexagonal socket drive shape, allowing for high torque tightening. The hexagonal socket allows for even distribution of tool pressure at six points, reducing wear on the drive socket during fastening. They are one of the most common types of screws, along with machine screws and hex bolts. Cap screws are primarily made of steel, with materials such as S45C and SCM435 undergoing heat treatment for increased hardness. Cap screws are used not only for fastening machinery and equipment but also in applications where frequent fastening and loosening are required. While screws typically wear out over repeated use, cap screws withstand repeated fastening due to their hexagonal socket shape and heat-treated strength. Types of Cap Screws: Cap (Hex Socket Head Bolt) Button Cap Countersunk Cap Set Screws (Cup Point, Flat Point, Cone Point, Dog Point, Double Point) Ball Plunger Plug Shoulder Bolt Air Vent Cap Choosing the right type is essential depending on the environment and application. Due to their ability to handle high torque and frequent fastening, cap screws are commonly used in manufacturing jigs, vises, and mold fastening. They are also widely used in machinery and equipment where high-torque fastening is needed. The hexagonal socket shape allows end users to fasten with minimal tools. Examples of Applications: Cap (Hex Socket Head Bolt): Mold and jig fastening, high-torque applications, designs requiring minimal tools for assembly. Button Cap: Mold and jig fastening, high-torque applications, assembly with minimal tools. Countersunk Cap: Mold and jig fastening, high-torque applications, assembly with minimal tools. Set Screws (Cup Point, Flat Point, Cone Point, Dog Point, Double Point): Component assembly. Ball Plunger: Used for positioning, indexing, and ejecting sliding or rotating parts. Plug: Used in hydraulic and pneumatic equipment, pumps, and automobiles to stabilize airflow and oil flow. Shoulder Bolt / Stripper Bolt: These bolts have a long shank with a precision ground finish. They are commonly used for shaft fixing in moving parts, as well as in engines, pulleys, and vacuum systems. Air Vent Cap: Used ...

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January 15th, 2025

What is a Construction Screw? | Simple Explanation in 3 Minutes: Construction screws are screws used in architecture and civil engineering to fasten and join various building materials such as wood, concrete, and metal. These screws are designed to enhance work efficiency and durability in construction sites. Construction screws are special screws used in the architecture and construction industries. By using these screws, materials can be fastened more securely than with nails. Therefore, they are used in assembling, installing, and fixing building materials and structures, making them essential in situations where safety and durability are required. High Load Capacity: Construction screws are designed to support heavy loads and structural elements, requiring high load capacity. Corrosion Resistance: Since construction screws used outdoors are exposed to weather conditions, they are made from corrosion-resistant materials such as zinc plating, stainless steel, or special coatings. Heat Resistance: Some construction screws need to withstand high temperatures, making them suitable for applications like heating system installations. Construction screws are essential for ensuring the safety and durability of construction projects. Choosing the right screws for specific building materials and environments is crucial. Construction screws are widely used in various building scenarios, including the following: Wooden Structures: Widely used for assembling wooden structures such as houses, furniture, decks, fences, and outdoor structures. Concrete Structures: Concrete screws and anchor bolts provide stability when attached to concrete or stone buildings, used in building foundations, walls, floors, railings, and columns. Metal Structures: Metal screws are used in assembling steel structures and ironworks, necessary for bridges, towers, railway vehicles, and industrial facilities. Outdoor Facilities: Construction screws are used to secure outdoor installations such as streetlights, signs, utility poles, gazebos, and playground equipment. Fire-Resistant Structures: Fire-resistant screws are used in fireproof structures and high-temperature environments, necessary for fire protection equipment, ovens, boilers, and industrial furnaces. Interior Construction: Used in interior work for securing wall panels, ceilings, flooring, and furniture, especially in residential interior projects. 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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January 05th, 2025

What is a Tamper-Resistant Screw? | Simple Explanation in 3 Minute: Tamper-proof screws are specially designed screws that prevent intentional removal. They are used to ensure security and safety, particularly in public spaces and environments where safety is a priority. They are also commonly referred to as “security screws.” Tamper-proof screws differ from regular screws in that they have a special design and structure. As the name suggests, their primary purpose is to make installation and removal difficult, preventing tampering and unauthorized access. They are typically made from materials such as stainless steel or iron. Because of these properties, tamper-proof screws are often used for security, crime prevention, and safety applications. Below are the key features of tamper-proof screws: Special Head Shapes: Tamper-proof screws have unique head shapes different from standard screws. For example, they may have hexagonal holes or grooves designed to resist slipping, making them difficult to handle with regular tools. Requires Special Tools: Tamper-proof screws cannot be removed with standard screwdrivers or wrenches. Instead, they require dedicated removal tools, which are not easily accessible to the general public. Beyond preventing simple tampering, these screws have a wide range of applications. For example, they are used in public facilities to prevent vandalism and theft, and in private companies to prevent disassembly of electronic devices. Tamper-proof screws are widely used in the following areas: Public Facilities: Tamper-proof screws help protect public facilities and public transportation infrastructure (benches, signs, lighting, etc.) from vandalism and destruction. Automotive Industry: Tamper-proof screws are used to secure vehicle license plates and components, preventing theft and damage. Construction Industry: These screws contribute to building and facility security by preventing unauthorized entry and destruction. Information Security: Tamper-proof screws are used to secure server racks and network equipment, enhancing physical access restrictions. Tamper-proof screws are essential elements in improving security in specific environments and applications. Their design and characteristics help protect valuable assets and facilities from unauthorized tampering. 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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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 ...