石渡螺子製作所 List of Products and Services

Are you facing issues like 'the cost reduction of parts is not progressing,' 'we are struggling with insufficient strength,' or 'the machining process takes too long'? While machining allows for high-precision processing, it often results in a lot of material waste (cutting chips) and can be time-consuming, leading to higher costs. Additionally, the cutting of the metal's fiber structure can leave challenges regarding strength. At Ishiwatari Screw Manufacturing, we strongly support our customers' VA/VE proposals, leveraging the cold forging technology we have cultivated over many years. Cold forging has the following advantages as it shapes materials by compressing them in a mold without cutting. We respond to a variety of materials and work 'together with our customers' from the prototype and development stages. Even from a single drawing, we can propose the optimal shape and method. We also offer one-stop solutions for secondary processing (machining, polishing, etc.) after forging. Under a thorough quality assurance system based on ISO9001, we deliver reliable products to our customers. If you are struggling with cost reduction or quality improvement of fastening parts, please feel free to consult Ishiwatari Screw Manufacturing. *For more details, please contact us or download our catalog.

• Processing Contract
• Contract manufacturing

We would like to introduce our "Cold Forging Process" that we offer. Cold forging refers to the process of continuously applying a certain amount of force at room temperature to coil-shaped materials without heating, using a header (head forming machine) and other cold forging machinery, to shape them through plastic deformation. Plastic deformation is a processing method that utilizes the property of metal materials that, when bent, stretched, or hammered with a certain amount of force, they do not return to their original shape (plastic deformation). Due to the differences in the properties of the materials, fine adjustments to the molds are generally required, making "copper cold forging," which is typically difficult to handle, possible with our company's unique know-how. 【Features】 ■ Since the material is processed as is, there is less material loss compared to cutting processes. ■ The processing speed is fast, and compared to hot forging and warm processing, there is less distortion due to heat. ■ Shaping is done using molds such as dies and punches made from materials like carbide. ■ High processing accuracy allows for the production of uniformly precise products in a short time. *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

Ishiwatari Screw Manufacturing Co., Ltd. precisely manages the manufacturing process to complete precision parts and deliver them to customers both domestically and internationally. By maximizing our past experience and the "Production Management System," we achieve delivery times that satisfy customer demands. We can respond quickly not only to startup deadlines but also to urgent requests for regular flow products by swiftly understanding the availability of materials and the operational status of machinery. 【Features】 ■ Thorough production management ■ Global capabilities ■ Technical improvement capabilities ■ Knowledge accumulation capabilities ■ Speed in manufacturing *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

At Ishiwatari Screw Manufacturing Co., Ltd., we conduct vacuum cleaning. We are equipped with facilities for degreasing and cleaning copper. Copper quickly discolors when left in the air with machining oil attached, so it is necessary to perform degreasing and cleaning promptly after processing. Recently, there has been an increase in the demand for cleanliness regarding contamination (foreign substances such as metal fragments, machining oil, fibers, etc.) even for iron parts, leading to an increase in cleaning items. 【Features】 ■ Completely safe use of flammable solvents such as hydrocarbon-based solvents ■ High-speed cleaning superior to freon ■ Space-saving vertical structure ■ Increased cavitation effect due to degassing action ■ Significant cost reduction through a completely closed system *For more details, please refer to the PDF materials or feel free to contact us.

• Ultrasonic Cleaner

We would like to introduce our "Cold Forging Process." Cold forging is a process where coil-shaped materials are continuously subjected to a certain amount of force at room temperature, without heating, using headers (head forming machines) and other cold forging machinery to shape them through plastic deformation. Plastic deformation refers to the processing method that utilizes the property of metal materials that, when bent, stretched, or hammered with a certain amount of force, do not return to their original shape (plastic deformation). 【Features】 - Since the material is processed as is, there is less material loss compared to cutting processes. - The processing speed is fast, and compared to hot forging and warm processing, there is less distortion due to heat. - The shaping is done using molds such as dies and punches made from materials like cemented carbide. - High processing accuracy allows for the production of uniform products in a short time. *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

Ishiwatari Screw Manufacturing Co., Ltd. specializes in the manufacturing and sales of automotive parts and special components. A major feature of our products is the use of a manufacturing method called "cold forging," which utilizes accumulated know-how to produce special parts. Products that undergo "forging" exceed the strength of the material, particularly in terms of critical tensile strength, allowing for high-quality special parts. [Features] ■ Utilizes a manufacturing method called "cold forging," which is based on accumulated know-how, to produce special parts. ■ Exceeds the strength of the material, particularly in terms of critical tensile strength. *For more details, please refer to the PDF document or feel free to contact us.

• bolt

Since our establishment in 1968, we have been engaged in the manufacturing and sales of metal parts, primarily fasteners, for various industries including the automotive sector. We uphold the quality policy of "constantly creating products that satisfy our customers and providing stable quality," and we strive to enhance the "quality of products," "quality of equipment and machinery," "quality of personnel," and "quality of systems" in line with this policy, utilizing our past know-how. We strongly feel that the environment surrounding the parts manufacturing industry is constantly changing, and there is a demand for responses that "satisfy people around the world" from an international perspective. We aim to ensure that each employee fulfills their social responsibilities and contributes to the local community, thereby providing greater satisfaction to everyone. We kindly ask for your continued guidance and encouragement. For more details, please contact us or refer to our catalog.

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