Custom-made screws by specialists in special screws! We accommodate various shapes.
"San-Ei," which manufactures and sells special screws in Osaka, offers a completely custom-made service that produces special screws tailored to specific products and 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 processing - Welding - Through hole processing - Tapping processing [Recommended for the following people!] - Those who need special screws that cannot be obtained commercially - Those who require screws for specific products or specifications in construction, machine tools, transportation 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 wide variety of situations → We handle joining processes and assembly in-house, accommodating various scenarios. - Short delivery times / Speedy delivery through numerous partner manufacturers → We work with over a hundred partner manufacturers, allowing 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 achieving cost reductions while maintaining Japanese quality.
Price information
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Delivery Time
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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Head hole processing Hexagon
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Head hole processing Hexalobular
catalog（1）
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Company information
I want to outsource manufacturing... Is it possible to procure cheaply from overseas? Managing product rotation and oversight is tough! San-Ei will help solve the problems together. 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 assist in reducing costs while maintaining Japanese quality. We provide consistent support from planning to product, aiming to shorten the time for each process. Recently, we have received high praise even for prototypes and small lots.
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