Custom-made screws by specialists in special screws! We accommodate various shapes.
San-Ei," a company based in Osaka that manufactures and sells special screws, offers a completely custom-made service that produces special screws according to specific products or specifications, such as screw parts not available on the market, long bolts, and bolts with internal threads. 【Processing Examples】 ■ Head shape processing (oval shape/knurled) ■ Hole processing in the head (hexagonal/hexalobular) ■ Eccentric processing ■ Head painting ■ Polishing ■ Welding ■ Through hole processing ■ Tapping 【Recommended for the following people!】 ◎ Those who need special screws that cannot be obtained commercially ◎ Those who require specific products or specifications for construction, machine tools, transport machinery, industrial machinery, chemical plants, etc. ◎ Cases where materials or surface treatments are needed according to environmental conditions, such as improving strength, corrosion resistance, and wear resistance. For more details, please download the catalog or contact us.
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basic information
**Four Points of San-Ei** ○ One-stop service / Providing solutions to solve problems → Upon request, we will respond to customer needs from drafting to material procurement, processing, surface treatment, joining, and assembly. ○ Trading company × manufacturer functions / Responses tailored to a variety of situations → We handle joining processes and assembly in-house, allowing us to respond to various scenarios. ○ Short delivery times / Speedy delivery through numerous partner manufacturers → We work with over a hundred partner manufacturers, enabling us to respond immediately from prototypes to mass production. ○ Overseas research / Cost reduction with Japanese quality → By collaborating with our office in Vietnam, we assist in cost reduction while maintaining Japanese quality.
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Applications/Examples of results
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Detailed information
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Head shape processing Oval shape
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Head shape processing Knurling
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Hole processing for the head Hexagonal
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Head hole processing Hexalobular
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Company information
I want to outsource manufacturing, but... is it possible to procure cheaply from overseas? Managing product circulation and inventory is tough! San-Ei will work together to solve the problems. We provide solutions to address challenges with a one-stop service. We respond to a wide variety of situations and can ensure speedy delivery through numerous partner manufacturers. By collaborating with our office in Vietnam, we can assist in reducing costs while maintaining Japanese quality. We provide consistent support from planning to product delivery, aiming to shorten the time for each process. Recently, we have received high praise for our prototypes and small lot productions as well.