太西精工 List of Products and Services

At Taisei Seiko, we handle a wide range of products, including cold forged items and special screws, from the design and prototyping stages. Based on customer requests, we support appropriate manufacturing considering usage environments, functions, specifications, and production plans. We are also skilled at proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Processing Example ■Features: During cold forging (no secondary processing) *For more details, please download the PDF or feel free to contact us.

• nut
• bolt
• Screw

At Taisei Seiko, we handle a wide range of products, including cold forged items and special screws, from the design and prototype stages. Based on customer requests, we support appropriate manufacturing considering the usage environment, functions, specifications, and production plans. We are also skilled at proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Torque Setting Screw ■Industry: Electrical and Vehicle Related ■Material: SWCH18A ■Features: Designed to have the head break off when a certain torque is applied. *For more details, please download the PDF or feel free to contact us.

• nut
• bolt
• Screw

At Taisei Seiko, we handle a wide range of products, including cold forged items and special screws, from the design and prototype stages. In response to customer requests, we support appropriate manufacturing based on usage environment, functionality, specifications, and production plans. We also excel in proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Rivet Pin (Through Type) ■Industry: Building Components ■Material: SWCH10R ■Features: Through processing by a part former *For more details, please download the PDF or feel free to contact us.

• nut
• bolt
• Screw

At Taisei Seiko, we handle a wide range of products, including cold-forged items and special screws, from the design and prototyping stages. Based on customer requests, we support appropriate manufacturing considering usage environments, functions, specifications, and production plans. We also excel in proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Upset Hex Bolt ■Industry: Electrical Equipment and Construction ■Material: XM-7, SWCH10R ■Features: Rough end, bar end *For more details, please download the PDF or feel free to contact us.

• bolt

At Taisei Seiko, we handle a wide range of products, including cold forged items and special screws, from the design and prototyping stages. Based on customer requests, we support appropriate manufacturing considering usage environments, functions, specifications, and production plans. We also excel in proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Screw for Hose Band ■Material: SWCH18A *For more details, please download the PDF or feel free to contact us.

• Screw

At Taisei Seiko, we handle a wide range of products, including cold forged items and special screws, from the design and prototype stages. Based on customer requests, we support appropriate manufacturing considering usage environments, functions, specifications, and production plans. We also excel in proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Step Pin ■Material: XM-7, SWCH10R ■Features: Products with no secondary processing due to multi-stage headers *For more details, please download the PDF or feel free to contact us.

• nut
• bolt
• Screw

At Taisei Seiko, we handle a wide range of products, including cold forged items and special screws, from the design and prototyping stages. Based on customer requests, we support appropriate manufacturing considering usage environments, functions, specifications, and production plans. We also excel in proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Special Tapping ■Industry: SWCH16–18A *For more details, please download the PDF or feel free to contact us.

• nut
• bolt
• Screw

At Taisei Seiko, we handle a wide range of products, including cold-forged items and special screws, from the design and prototyping stages. Based on customer requests, we support appropriate manufacturing considering usage environments, functions, specifications, and production plans. We also excel in proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Color for Inserts ■Industry: Automotive-related parts ■Material: SWCH10R・C2700 ■Features: Through holes created by a part former *For more details, please download the PDF or feel free to contact us.

• nut
• bolt
• Screw

At Taisei Seiko, we handle a wide range of products, including cold-forged items and special screws, from the design and prototype stages. Based on customer requests, we support appropriate manufacturing considering usage environment, functionality, specifications, and production plans. We are also skilled in proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Woodworking Nut ■Industry: Woodworking Related ■Material: SWRM・SWCH10R *For more details, please download the PDF or feel free to contact us.

• nut

At Taisei Seiko, we handle a wide range of products, including cold-forged items and special screws, from the design and prototyping stages. According to customer requests, we support appropriate manufacturing based on usage environment, functionality, specifications, and production plans. We are also skilled in proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Woodworking Joint Bolt ■Industry: Woodworking Related ■Material: SWRM・SWCH10R *For more details, please download the PDF or feel free to contact us.

• bolt

At Taisei Seiko, we handle a wide range of products, including cold forged items and special screws, from the design and prototyping stages. Based on customer requests, we support appropriate manufacturing considering usage environments, functions, specifications, and production plans. We are also skilled at proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Hanger Bolt ■Industry: Woodworking ■Material: SWRM, SUS-304 *For more details, please download the PDF or feel free to contact us.

• bolt

At Taisei Seiko, we handle a wide range of products, including cold forged items and special screws, from the design and prototype stages. In response to customer requests, we support appropriate manufacturing based on usage environment, functionality, specifications, and production plans. We also excel in proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Hollow Blind Nut ■Industry: Low Voltage Related ■Material: SWCH10R *For more details, please download the PDF or feel free to contact us.

• nut

At Taisei Seiko, we handle a wide range of products from the design and prototyping stages, including cold-forged products and special screws. Based on customer requests, we support appropriate manufacturing considering usage environment, functionality, specifications, and production plans. We also excel in proposing cost reductions for products with complex shapes and those requiring machining. 【Case Overview】 ■Product Name: Bolt for Inserts ■Industry: Automotive Parts ■Material: SWCH10R ■Features: Square head shaping using multi-stage headers *For more details, please download the PDF or feel free to contact us.

• bolt

We would like to introduce a case study of proposals unique to Tainishi Seiko, which has extensive experience with "shelf dowels," at a building materials manufacturer. The manufacturer had been producing through cutting, but they faced issues with low yield, long manufacturing times, and consequently high costs. After considering production with headers, we were able to achieve mass production using a 2-die, 3-blow method. [Case Overview] ■ Request - They had been producing through cutting, but faced low yield, long manufacturing times, and high costs. ■ Proposal and Results - After considering production with headers, we were able to achieve mass production using a 2-die, 3-blow method. *For more details, please refer to the related links or feel free to contact us.

• Contract manufacturing

Our company has established a thorough quality control system that applies the expertise gained from mass production of automobiles and gas-related equipment to prototype and small-batch products. In addition to visual inspections, we have introduced image recognition machines, allowing us to flexibly accommodate requests ranging from sampling inspections to 100% inspections. Furthermore, during the prototyping phase, we provide various inspection and measurement data as per customer requests. 【Features】 ■ Quality control that combines inspection equipment such as image sorting machines with visual inspections ■ Creation of various inspection sheets and reports tailored to customer needs, from prototyping to mass production *For more details, please refer to the related links or feel free to contact us.

• Other inspection equipment and devices

We would like to introduce a case study of proposals unique to Tainishi Seiko, a manufacturer of construction materials, based on their extensive experience with "low-profile round head bolts." The manufacturer requested that the head be as low as possible. Our company was able to mass-produce a head diameter of φ18 with a head thickness of 2mm using only cold forging and without any secondary processing. [Case Overview] ■ Request - To achieve the lowest possible head ■ Proposal and Results - Mass production was achieved with a head diameter of φ18 and a head thickness of 2mm using only cold forging and without any secondary processing. *For more details, please refer to the related links or feel free to contact us.

• bolt
• Contract manufacturing

建築金物メーカーへ行った「突起付きワッシャー」の経験豊富な 太西精工ならではの提案事例についてご紹介いたします。 同メーカーから、突起と裏表凹があり、技術的難易度が高いという ご要望がございました。 当社で最初プレスでの製造を検討したが製造不可だったためパーツホーマー で検討。試作の上、4ダイス4ブローで量産できました。単品での使用では なく当社でボルト等とアッセンブリして製品にしています。 【事例概要】 ■ご要望 ・突起と裏表凹があり、技術的難易度が高い ■提案と実績 ・最初プレスでの製造を検討したが製造不可だったためパーツホーマーで検討 ・試作の上、4ダイス4ブローで量産できた ※詳しくは関連リンクをご覧いただくか、お気軽にお問い合わせください。

• Contract manufacturing

At Taisei Seiko, we handle a wide range of cold forged products and special screws from the design and prototyping stages. According to customer requests, we support appropriate manufacturing considering the usage environment, functions, specifications, and production plans. In addition, for prototypes including development, we will make various proposals while leveraging our company's experience and manufacturing know-how, taking QCD into account. 【Features】 ■ We handle a wide range of cold forged products and special screws from the design and prototyping stages. ■ We support appropriate manufacturing according to customer requests, considering the usage environment, functions, specifications, and production plans. ■ In prototypes including development, we will make various proposals while leveraging our company's experience and manufacturing know-how, taking QCD into account. *For more details, please refer to the related links or feel free to contact us.

• Contract manufacturing

At Taisei Precision Engineering, we actively take on the challenge of shapes and processes with high technical difficulty. We design and manufacture dedicated tools and special jigs in-house, striving to meet your requirements not only in terms of dimensional accuracy and quality but also in delivery times and costs. We can flexibly accommodate various quantities, including prototypes, single items, small lots, and mass production. Please feel free to contact us when you need our services. 【Features】 ■ Actively challenge shapes and processes with high technical difficulty ■ Design dedicated tools and special jigs in-house ■ Respond to your requirements in terms of quality, delivery times, and costs, in addition to dimensional accuracy ■ Flexibly accommodate various quantities, including prototypes, single items, small lots, and mass production *For more details, please refer to the related links or feel free to contact us.

• Contract manufacturing

In this document, we introduce five key points to identify common issues that may arise during mass production of cold-formed and special screws at the prototype stage. We explain whether the product requires extensive post-processing, whether there are strict tolerances on unnecessary parts, and more. We also include unique proposal examples and product cases from Tainishi Seiko. We encourage you to read it. 【Contents (partial)】 ■ Five key points to identify common issues during mass production at the prototype stage - Is the product one that requires extensive post-processing? - Are there strict tolerances on unnecessary parts? - Are there thin sections that put a burden on the mold? - If post-processing is necessary, is the product shaped for easy flow in automatic machines? - If plating is required, is the shape conducive to easy plating? *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

This document introduces five key points to identify potential issues that are likely to occur during mass production of cold-formed and special screws at the prototype stage. It explains questions such as "Is it a product that requires a lot of post-processing?" and "Are there strict tolerances on unnecessary parts?" We also provide unique proposal examples and product cases from Tainishi Seiko. We encourage you to read it. 【Contents (partial)】 ■ Five key points to identify potential issues during mass production at the prototype stage - Is it a product that requires a lot of post-processing? - Are there strict tolerances on unnecessary parts? - Are there thin sections that put a burden on the mold? - If post-processing is necessary, is the product shaped for easy flow in automatic machines? - If plating is required, is the shape conducive to easy plating? *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

Our company specializes in the design, manufacturing, and sales of special screws, special rivets, special bolts, pins, collars, hollow bolts, hollow nuts, and other fastening components. By using multi-stage headers and parts formers, it is possible to process wire into more complex shapes in a single step through cold forging. 【Product Line】 ■ Manufacturing and sales of special screws, specially shaped parts, and cold forged products (parts formers and header processing) in general ■ From design drawings to the development of fastening components ■ Materials: Steel, stainless steel, brass, copper, aluminum, and others ■ Surface treatment achievements: Unichrome, chromate, nickel, chrome, trivalent chromate, trivalent unichrome, rust-proofing, Parkerizing, various coatings, and others *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing